Re: [nfc-l] NFC recording 7 minutes twilight this morning
I am going through many of my ebird lists from years ago and am changing to
nocturnal flight count and following the protocol below. I have been using
ebird for many many years and am a reviewer for my local county. So far, I am
the only one in my county who does NFC so I appreciate your comments. Like I
said, I should have known this...
From: Geoff Malosh
To: 'Night Flight Call Discussions'
Sent: Sunday, September 10, 2017 12:18 PM
Subject: RE: [nfc-l] NFC recording 7 minutes twilight this morning
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{}#yiv6096731939 Dave, In your recording I am able to hear mostly Swainson’s
Thrush and some Wood Thrush, along with a few others, perhaps Scarlet Tanager,
and a few “zeep” calls and maybe one or two “up seeps”. The audio is very hard
to hear so there could easily be more. I didn’t pick out any for-sure
Gray-cheeked Thrushes. I should also point out that eBird requests that counts
of nocturnal flight calls be entered under a specific protocol and in a very
specific way. The reason is so that these counts of nocturnal calls do not skew
the analysis of “stationary” and “traveling” counts that are used by day, when
detecting birds is done much differently. More information on how eBird
requests nocturnal counts be entered is here:
http://help.ebird.org/customer/en/portal/articles/1010492-entering-nocturnal-flight-call-counts
Things that should be corrected on your checklist include changing the
protocol from Stationary to Nocturnal Flight Call Count, changing the count of
“passerine sp.” to X and moving the count of 500 into the notes field (although
most of these are Swainson’s Thrush), and changing the answer to “are you
submitting a complete checklist” to No. Here in Pittsburgh the past two early
mornings have been outstanding listening, with hundreds Swainson’s Thrush and
many other calls just in the period between astronomical and civil twilights
each morning. Gray-cheeked Thrushes have started moving through here too. When
everything is analyzed I expect there will be in excess of 1000 calls of
Swainson’s Thrush alone, and perhaps double that number for total flight calls,
for each of the overnight periods Sept 9 and 10. Good listening! Geoff
MaloshPittsburgh, Pennsylvania From:
bounce-2378437-53236...@mm.list.cornell.edu
[mailto:bounce-2378437-53236...@mm.list.cornell.edu] On Behalf Of Meena Madhav
Haribal
Sent: Sunday, September 10, 2017 11:30 AM
To: NFC-L
Subject: Re: [nfc-l] NFC recording 7 minutes twilight this morning Hi Dave,
In the Ebird post I can hear hardly anything even noise. Can you send the
recordings as whole directly to me? Yesterday night we were at mount Pleasant
and among at least 30 or forty calls we had one or two Gray-cheeked. At my home
pout of 100+ calls I did not get any Gray-cheeked. CheersMeena Meena
HaribalIthaca NY
1485042.429007,-76.47111http://www.haribal.org/http://meenaharibal.blogspot.com/Ithaca
area moths: https://plus.google.com/118047473426099383469/postsDragonfly book
sample pages: http://www.haribal.org/dragonflies/samplebook.pdf From:
bounce-2378433-53237...@mm.list.cornell.edu
on behalf of david nicosia
Sent: Sunday, September 10, 2017 11:11:01 AM
To: NFC-L
Subject: [nfc-l] NFC recording 7 minutes twilight this morning All, I used
my phone to record a nocturnal flight near twilight as the birds werecoming
down this morning. I know I had SWAINSON'S THRUSH and VEERY. I ampretty sure I
had a GRAY-CHEEKED THRUSH and also WOOD THRUSHand ROSE-BREASTED GROSBEAKS. I
also had some unidentified calls. So I amplified the audio, and uploaded to
ebird. To my dismay, the spectrogramshows nothing but you can still hear calls
Re: [nfc-l] NFC recording 7 minutes twilight this morning
Thanks. I should know better on this one!!! I will do so.
From: Geoff Malosh
To: 'Night Flight Call Discussions'
Sent: Sunday, September 10, 2017 12:18 PM
Subject: RE: [nfc-l] NFC recording 7 minutes twilight this morning
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{}#yiv6096731939 Dave, In your recording I am able to hear mostly Swainson’s
Thrush and some Wood Thrush, along with a few others, perhaps Scarlet Tanager,
and a few “zeep” calls and maybe one or two “up seeps”. The audio is very hard
to hear so there could easily be more. I didn’t pick out any for-sure
Gray-cheeked Thrushes. I should also point out that eBird requests that counts
of nocturnal flight calls be entered under a specific protocol and in a very
specific way. The reason is so that these counts of nocturnal calls do not skew
the analysis of “stationary” and “traveling” counts that are used by day, when
detecting birds is done much differently. More information on how eBird
requests nocturnal counts be entered is here:
http://help.ebird.org/customer/en/portal/articles/1010492-entering-nocturnal-flight-call-counts
Things that should be corrected on your checklist include changing the
protocol from Stationary to Nocturnal Flight Call Count, changing the count of
“passerine sp.” to X and moving the count of 500 into the notes field (although
most of these are Swainson’s Thrush), and changing the answer to “are you
submitting a complete checklist” to No. Here in Pittsburgh the past two early
mornings have been outstanding listening, with hundreds Swainson’s Thrush and
many other calls just in the period between astronomical and civil twilights
each morning. Gray-cheeked Thrushes have started moving through here too. When
everything is analyzed I expect there will be in excess of 1000 calls of
Swainson’s Thrush alone, and perhaps double that number for total flight calls,
for each of the overnight periods Sept 9 and 10. Good listening! Geoff
MaloshPittsburgh, Pennsylvania From:
bounce-2378437-53236...@mm.list.cornell.edu
[mailto:bounce-2378437-53236...@mm.list.cornell.edu] On Behalf Of Meena Madhav
Haribal
Sent: Sunday, September 10, 2017 11:30 AM
To: NFC-L
Subject: Re: [nfc-l] NFC recording 7 minutes twilight this morning Hi Dave,
In the Ebird post I can hear hardly anything even noise. Can you send the
recordings as whole directly to me? Yesterday night we were at mount Pleasant
and among at least 30 or forty calls we had one or two Gray-cheeked. At my home
pout of 100+ calls I did not get any Gray-cheeked. CheersMeena Meena
HaribalIthaca NY
1485042.429007,-76.47111http://www.haribal.org/http://meenaharibal.blogspot.com/Ithaca
area moths: https://plus.google.com/118047473426099383469/postsDragonfly book
sample pages: http://www.haribal.org/dragonflies/samplebook.pdf From:
bounce-2378433-53237...@mm.list.cornell.edu
on behalf of david nicosia
Sent: Sunday, September 10, 2017 11:11:01 AM
To: NFC-L
Subject: [nfc-l] NFC recording 7 minutes twilight this morning All, I used
my phone to record a nocturnal flight near twilight as the birds werecoming
down this morning. I know I had SWAINSON'S THRUSH and VEERY. I ampretty sure I
had a GRAY-CHEEKED THRUSH and also WOOD THRUSHand ROSE-BREASTED GROSBEAKS. I
also had some unidentified calls. So I amplified the audio, and uploaded to
ebird. To my dismay, the spectrogramshows nothing but you can still hear calls.
Can someone listen to thisand let me know what I had?? Its 7 minutes long. I
would appreciate anyone's take onthis... see
http://ebird.org/ebird/view/checklist/S39101824 Thanks Dave Nicosia --NFC-L
List Info:Welcome and BasicsRules and InformationSubscribe, Configuration
Re: [nfc-l] NFC recording 7 minutes twilight this morning
I am uploading two 82 MB files to google drive for you. I actually have 14
minutesof data. I didn't upload the second file to ebird... Thanks. I am
pretty sure I heard the heee...aa' call of the GCTHNot 100% sure... sorry you
can't hear these. I turned the volumeup and with headphones I can hear the
birds from my laptop... if you can amplifythe sounds of the birds etc that
would be awesome.
From: Meena Madhav Haribal
To: NFC-L
Sent: Sunday, September 10, 2017 11:30 AM
Subject: Re: [nfc-l] NFC recording 7 minutes twilight this morning
#yiv9189441510 #yiv9189441510 -- P
{margin-top:0;margin-bottom:0;}#yiv9189441510 Hi Dave,
In the Ebird post I can hear hardly anything even noise. Can you send the
recordings as whole directly to me? Yesterday night we were at mount Pleasant
and among at least 30 or forty calls we had one or two Gray-cheeked. At my home
pout of 100+ calls I did not get any Gray-cheeked.
CheersMeena
Meena HaribalIthaca NY
1485042.429007,-76.47111http://www.haribal.org/http://meenaharibal.blogspot.com/Ithaca
area moths: https://plus.google.com/118047473426099383469/postsDragonfly book
sample pages: http://www.haribal.org/dragonflies/samplebook.pdf From:
bounce-2378433-53237...@mm.list.cornell.edu
on behalf of david nicosia
Sent: Sunday, September 10, 2017 11:11:01 AM
To: NFC-L
Subject: [nfc-l] NFC recording 7 minutes twilight this morning All,
I used my phone to record a nocturnal flight near twilight as the birds
werecoming down this morning. I know I had SWAINSON'S THRUSH and VEERY. I
ampretty sure I had a GRAY-CHEEKED THRUSH and also WOOD THRUSHand ROSE-BREASTED
GROSBEAKS. I also had some unidentified calls. So I amplified the audio, and
uploaded to ebird. To my dismay, the spectrogramshows nothing but you can still
hear calls. Can someone listen to thisand let me know what I had?? Its 7
minutes long. I would appreciate anyone's take onthis...
see http://ebird.org/ebird/view/checklist/S39101824
Thanks
Dave Nicosia --NFC-L List Info:Welcome and BasicsRules and
InformationSubscribe, Configuration and LeaveArchives:The Mail
ArchiveSurfbirdsBirding.ABA.OrgPlease submit your observations
toeBird!NFC-L List Info:Welcome and BasicsRules and InformationSubscribe,
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submit your observations to eBird!--
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[nfc-l] NFC recording 7 minutes twilight this morning
All, I used my phone to record a nocturnal flight near twilight as the birds werecoming down this morning. I know I had SWAINSON'S THRUSH and VEERY. I ampretty sure I had a GRAY-CHEEKED THRUSH and also WOOD THRUSHand ROSE-BREASTED GROSBEAKS. I also had some unidentified calls. So I amplified the audio, and uploaded to ebird. To my dismay, the spectrogramshows nothing but you can still hear calls. Can someone listen to thisand let me know what I had?? Its 7 minutes long. I would appreciate anyone's take onthis... see http://ebird.org/ebird/view/checklist/S39101824 Thanks Dave Nicosia -- NFC-L List Info: Welcome and Basics � http://www.northeastbirding.com/NFC_WELCOME Rules and Information � http://www.northeastbirding.com/NFC_RULES Subscribe, Configuration and Leave � http://www.northeastbirding.com/NFC-L_SubscribeConfigurationLeave.htm Archives: The Mail Archive � http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html Surfbirds � http://www.surfbirds.com/birdingmail/Group/NFC-L Birding.ABA.Org � http://birding.aba.org/maillist/NFC Please submit your observations to eBird! ��http://ebird.org/content/ebird/ --
[nfc-l] Heavy Nocturnal Flight Binghamton Airport Last Night
I got finished by with work at 11 pm last evening andin the parking lot before I got into my car I heard a"stream" of chips, zips, zeets and zeeps! I listened for about5 minutes and it was constant. There were at least 3 SOLITARY SANDPIPERS that flew by. Additionally, I was surprised to heara BARN SWALLOW and right before I leftan early SWAINSON'S THRUSH!! The birds were very lowas cloud ceilings have dropped to a few hundred feetand there was a heavy drizzle falling. When I arrived at home which is at 1300 feet a few hundredfeet lower than the airport I still could hear the chips, zipsand zeeps etc but they were higher up. I listened forseveral more minutes and heard one more SOLITARYSANDPIPER but nothing else than I could ID. The radarshows modest echoes at this time. Dave Nicosia -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES http://www.NortheastBirding.com/NFC-L_SubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/NFC-L 3) http://birdingonthe.net/mailinglists/NFCL.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
[nfc-l] Beginnings of Fall Migration evident on radar last night
Worked the overnight shift last night and noticed classic radar blossoms develop after sunset. Of course they were much smaller than peak migration but the doppler winds did show a northwesterly to north component. The radar echoes were biological in nature so I imagine they were birds already heading south. The echoes were prevalent on other radars where the winds were north too. First shorebirds at Knox-Marcellus marsh tomorrow??? ' Dave Nicosia -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES http://www.NortheastBirding.com/NFC-L_SubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/NFC-L 3) http://birdingonthe.net/mailinglists/NFCL.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
[nfc-l] Major migratory push across northeast PA on radar now
Radar shows high returns over northeast pa heading north. Tommorow could be an awesome day with many new arrivals! Sent from Yahoo Mail on Android -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES http://www.NortheastBirding.com/NFC-L_SubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/NFC-L 3) http://birdingonthe.net/mailinglists/NFCL.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
[nfc-l] Migration evident on radar in the deep south tonight!!
This is the first time I personally have noticed bird echoes on radar in the deep southern U.S in the southerly wind flow now. Spring is coming!!! -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES http://www.NortheastBirding.com/NFC-L_SubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/NFC-L 3) http://birdingonthe.net/mailinglists/NFCL.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
[nfc-l] Thrush Migration 5-6 am this morning 9/9
Got up at 5 am and listened for night calls, particularly thrushes, and found a decent flight, especially as they descended between 540 am and 555 am. During this time there were so many thrushes coming down that it was hard to count so I just estimated my numbers. Many times it was hard to tell if it was the same bird calling more than once. I did have 3 separate GRAY-CHEEKED THRUSHES at different times all very low. One was right over the house and sounded like it circled. As expected most thrushes were SWAINSON'S and I estimated about 60. VEERY was about 20 and WOOD THRUSH about 10 or so. By 600 am I think it was mostly over but it was hard to tell from increased traffic. Radar still showed some echoes so it could have continued further. Good birding to all. Dave Nicosia -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES http://www.NortheastBirding.com/NFC-L_SubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/NFC-L 3) http://birdingonthe.net/mailinglists/NFCL.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
Re: [nfc-l] Fw: [cayugabirds-l] Migration beginning to become evident on radar
In upstate NY I should say...sorry... From: david nicosia To: "NFC-L@cornell.edu" Sent: Sunday, July 14, 2013 10:46 PM Subject: [nfc-l] Fw: [cayugabirds-l] Migration beginning to become evident on radar - Forwarded Message ----- From: david nicosia To: Cayugabirds- L ; Bluewing Sent: Sunday, July 14, 2013 10:45 PM Subject: [cayugabirds-l] Migration beginning to become evident on radar I have noticed radar echoes blossoming some after sunset more so than the last couple weeks. At altitudes of about 3000 to 5000 feet AGL the echoes were moving from north to south, below that; the echoes are moving more west to east suggesting maybe some of these are insects?? Or maybe some are birds migrating or wandering toward the coast??? Not sure. There is a large high over the region with very light winds so I think what we are seeing in the velocity images are biological. Dual polar hydrometeor classification product suggests all echoes are biological this evening. This link has all the dual polar radar products along with the legacy reflectivity and velocity products. http://weather.cod.edu/satrad/nexrad/ Cheers, Dave Nicosia -- Cayugabirds-L List Info: Welcome and Basics Rules and Information Subscribe, Configuration and Leave Archives: The Mail Archive Surfbirds BirdingOnThe.Net Please submit your observations to eBird! -- -- NFC-L List Info: Welcome and Basics Rules and Information Subscribe, Configuration and Leave Archives: The Mail Archive Surfbirds BirdingOnThe.Net Please submit your observations to eBird! -- -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES http://www.NortheastBirding.com/NFC-L_SubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/NFC-L 3) http://birdingonthe.net/mailinglists/NFCL.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
[nfc-l] Fw: [cayugabirds-l] Migration beginning to become evident on radar
- Forwarded Message - From: david nicosia To: Cayugabirds- L ; Bluewing Sent: Sunday, July 14, 2013 10:45 PM Subject: [cayugabirds-l] Migration beginning to become evident on radar I have noticed radar echoes blossoming some after sunset more so than the last couple weeks. At altitudes of about 3000 to 5000 feet AGL the echoes were moving from north to south, below that; the echoes are moving more west to east suggesting maybe some of these are insects?? Or maybe some are birds migrating or wandering toward the coast??? Not sure. There is a large high over the region with very light winds so I think what we are seeing in the velocity images are biological. Dual polar hydrometeor classification product suggests all echoes are biological this evening. This link has all the dual polar radar products along with the legacy reflectivity and velocity products. http://weather.cod.edu/satrad/nexrad/ Cheers, Dave Nicosia -- Cayugabirds-L List Info: Welcome and Basics Rules and Information Subscribe, Configuration and Leave Archives: The Mail Archive Surfbirds BirdingOnThe.Net Please submit your observations to eBird! -- -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES http://www.NortheastBirding.com/NFC-L_SubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/NFC-L 3) http://birdingonthe.net/mailinglists/NFCL.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
Re: [nfc-l] [nysbirds-l] Minimal Migration or Population Decline?
This is anecdotal. But each year I do an informal survey of the singing males at New Michigan State Forest in Pharsalia Chenango County, NY. I try very hard to not recount birds and I have been doing this almost yearly since 2009. This is a boreal like forest...one of the few you can find outside the Catskills and Adirondacks in the highlands of central NY. This year I found all typical boreal breeders to be as common as past years. BLACKBURNIAN, MAGNOLIA WARBLERS were most abundant like other years as well as tons of OVENBIRDS. My total numbers were a bit down but I did not have time to do a couple roads that I did past years. If I did these roads I have no doubt numbers who have been comparable to other years. The dawn chorus was very active. This is just one spotso hard to make any conclusions here. I am assuming this is just this year for many of you? If so, it has to be weather related. If it is a gradual decline through the years...then one would think it could be habitat changes...possibly wintering grounds and/or breeding grounds?? Of course, if resident birds are not as common either as has been stated...is there a disease affecting birds??? let's hope they rebound. Quite spring/summer woodlands is just downright depressing. From: Joan E. Collins To: 'Christopher T. Tessaglia-Hymes' Cc: 'NYSBIRDS-L' ; 'NFC-L' ; 'Sean O'Brien' ; 'Chris Rimmer' ; northern_ny_bi...@yahoogroups.com Sent: Monday, June 17, 2013 3:35 PM Subject: RE:[nfc-l] [nysbirds-l] Minimal Migration or Population Decline? Hi Chris/All, I am out every day and I have not noticed any improvement. As I walk through the forest (or bogs), the lack of birds is all I can think about. I am surprised this has not been a dominant discussion on our NYS Birds list serve. It is so disturbing and everyone is anxiously awaiting BBS data for this year – but of course roadside surveys don’t work well for many species. I can barely find a Lincoln’s Sparrow (I jump up and down when I hear one now) – a species that is normally abundant in our Adirondack bogs. Canada Warbler numbers are way down. I have also noticed the same lack of species that you listed (although, I have not noticed a lack of Ruby-throated Hummingbirds in northern NY). Indigo Bunting is another species that is hard to find. Scarlet Tanager, Veery….I could keep going… Chris Rimmer, Director of the Vermont Center for Ecostudies, emailed about the lack of neotropical migrants in e-central VT, and he is hearing the same thing from others – how quiet the forests are this spring. He has noticed that Swainson’s Thrush numbers are down up on Mount Mansfield in VT. I’ve been finding a few more on dawn tours up Whiteface Mountain since the Memorial Day Weekend 3-foot snowfall melted away. I plan to conduct the Mountain Birdwatch survey of that peak on Thursday, and the results should shed some light on Swainson’s Thrush numbers (at least in high elevation), in addition to numbers for all the other species we tally for that survey (I have the data from last year to compare to). Jeff Nadler, photographer, just emailed about a 3 day trip he took to boreal habitat areas in northern VT & NH, which he visits every year, and the lack of birds this year. He noticed not only a lack of neotropical migrants, but also a lack of year-round boreal species! He echoed the same thing everyone is noticing – the forests are “quiet” with no loud dawn chorus. I think we are all wondering the same question: “What happened?” I hope this question will eventually have an answer. Joan Collins Long Lake, NY From:Christopher T. Tessaglia-Hymes [mailto:c...@cornell.edu] Sent: Monday, June 17, 2013 11:17 AM To: Joan E. Collins Cc: NYSBIRDS-L; NFC-L; Sean O'Brien Subject: Re: [nysbirds-l] Fwd: Minimal Migration or Population Decline? Thank you, Joan, for this anecdotal evidence. Since it has been a couple of weeks now, I'm curious to know if anyone has noted an improvement in their local area birding spots, or if it has been more of the same. For me, I've noted a serious lack of typical neighborhood birds that used to be a regular part of the acoustic atmosphere: Rose-breasted Grosbeak, Baltimore Oriole and Red-eyed Vireo, just to name a few. I've also noticed a lack of Ruby-throated Hummingbirds this year – usually, they are zipping around and chittering in the neighborhood. Not so this year, yet anyway. If this is region-wide, I'd think it critically important to collect as much data as possible to help monitor or track this seeming dearth of activity. I expect this fall migration to be fairly telling, if there was a pop-ulation-wide impact of some kind. Sincerely, Chris T-H -- NFC-L List Info: Welcome and Basics Rules and Information Subscribe, Configuration and Leave Archives: The Mail Archive Surfbirds BirdingOnThe.Net Please submit your observations to eBird! -- -- NFC-L
[nfc-l] Update on Night Flight
The radar bird echoes are not as expansive as last night from NWS Binghamton's radar. It is noteworthy that radar sites tothe south where cloud ceilings are non-existent or much much higher have expansive bird echoes. Cloud ceilings are running between 500 and 1000 feet in much of central NY at this time. Fog was covering the highest hills. There was drizzle and light rain but mostly in northern NY. This begs the question if the birds are flying too low and mostly under the radar beam...or not migrating en-mass like last night due to the light rains and drizzle. From: david nicosia To: david nicosia ; Christopher T. Tessaglia-Hymes ; CAYUGABIRDS-L ; NFC- L ; Bluewing Sent: Friday, September 28, 2012 7:33 PM Subject: [bluewing-group] Re: [cayugabirds-l] FOG - Night Flight Bird echoes rapidly expanding on radar after sunset! From: david nicosia To: Christopher T. Tessaglia-Hymes ; CAYUGABIRDS-L ; NFC- L Sent: Friday, September 28, 2012 4:41 PM Subject: Re: [cayugabirds-l] FOG - Night Flight As it stands now, I think there is a good chance for low ceilings lasting well into the night. Probably less than 1000 feet all night...there will be fog too... especially over the hills. Winds are expected to be NW around 5-15 knots up through about 5-6 thousand feet through the night. Not sure how many birds will be taking off in the foggy/drizzly air mass in NY...but north into Ontario (which is north of the low cloud shield) there is a chilly mass in place and northerly winds which will increase through the night with a colder air mass pouring south. I would imagine this will get birds going south from Ontario into NY. It will be interesting to see if birds fly above the lower cloud shield or go below it ...or both. There also will be a cloud layer between 2000 and 4000 feet above ground level. This could be a great night...or a bust. Depends on what the birds do. Forecasting weather is hard enough, forecasting what birds will do is beyond my expertise. Maybe someone else can help here with the birds?? If the flight is low enough it may fall below the radar beam and not show up as well. If we see radar echo "blossoming" after sunset then we know there is a flight at 2000-5000 feet above ground level which still could mean many birds below the clouds and in the fog. Since there is also drizzle and light rain showers, the radar is picking up precipitation echoes. I have access to dual polar radar data which will be able to determine between the precipitation and the bird echoes. This will be interesting to see also. In any event, I hope, in some ways, the flight is not too low because the risk of tower and wind turbine kills will go way up. If people go out listening tonight, please share on this listserver. If you live near a tower and it is foggy you may want to check for kills. Let's hope this does not happen. Good luck everyone! Dave Nicosia From: Christopher T. Tessaglia-Hymes To: CAYUGABIRDS-L Sent: Friday, September 28, 2012 3:49 PM Subject: [cayugabirds-l] FOG - Night Flight Good afternoon, birders! Tonight the forecast for the Ithaca, NY area (at least) is looking very interesting. The local forecast is calling for a light NW wind (3-5 mph). Currently, we've got foggy conditions (very low cloud ceiling). If the weather pattern holds true, we may see a slowly increasing cloud ceiling height over the course of the night (thanks Dave Nicosia for this info!). If this condition persists into the night, we may see an excellent night flight of low-flying night migrants (thrushes, warblers, sparrows, etc.). This means that migrants will be easily heard, but it also means that they may temporarily circle around or even temporarily settle down near well lighted areas (lighted athletic fields, mall parking lots, etc.). On the potentially detrimental side of things, this means that birds may be more prone to striking human-made objects that are in unexpectedly in the way of these night-flying birds (for example: radio towers, wind turbines, tall lighted buildings, etc.). The negative side-effects from this type of weather event may include higher than normal numbers of tower-killed and wind turbine-killed birds and an increased incidence of nighttime window-strikes at tall lighted buildings. Local areas to go to listen for migrants and check for birds (healthy or otherwise) include: lighted athletic fields (Schoellkopf Field Stadium or other practice fields around Cornell University and Ithaca College), lighted parking lots (especially those at higher elevations, such as Shops at Ithaca Mall, Ithaca College Campus, Cornell Campus, Cayuga Medical Center, etc.), near tall lighted buildings, and possibly include checking radio towers or wind turbine sites for deceased or injured birds. Hopefully, tonight won't
Re: [cayugabirds-l] FOG - Night Flight
Bird echoes rapidly expanding on radar after sunset! From: david nicosia To: Christopher T. Tessaglia-Hymes ; CAYUGABIRDS-L ; NFC- L Sent: Friday, September 28, 2012 4:41 PM Subject: Re: [cayugabirds-l] FOG - Night Flight As it stands now, I think there is a good chance for low ceilings lasting well into the night. Probably less than 1000 feet all night...there will be fog too... especially over the hills. Winds are expected to be NW around 5-15 knots up through about 5-6 thousand feet through the night. Not sure how many birds will be taking off in the foggy/drizzly air mass in NY...but north into Ontario (which is north of the low cloud shield) there is a chilly mass in place and northerly winds which will increase through the night with a colder air mass pouring south. I would imagine this will get birds going south from Ontario into NY. It will be interesting to see if birds fly above the lower cloud shield or go below it ...or both. There also will be a cloud layer between 2000 and 4000 feet above ground level. This could be a great night...or a bust. Depends on what the birds do. Forecasting weather is hard enough, forecasting what birds will do is beyond my expertise. Maybe someone else can help here with the birds?? If the flight is low enough it may fall below the radar beam and not show up as well. If we see radar echo "blossoming" after sunset then we know there is a flight at 2000-5000 feet above ground level which still could mean many birds below the clouds and in the fog. Since there is also drizzle and light rain showers, the radar is picking up precipitation echoes. I have access to dual polar radar data which will be able to determine between the precipitation and the bird echoes. This will be interesting to see also. In any event, I hope, in some ways, the flight is not too low because the risk of tower and wind turbine kills will go way up. If people go out listening tonight, please share on this listserver. If you live near a tower and it is foggy you may want to check for kills. Let's hope this does not happen. Good luck everyone! Dave Nicosia From: Christopher T. Tessaglia-Hymes To: CAYUGABIRDS-L Sent: Friday, September 28, 2012 3:49 PM Subject: [cayugabirds-l] FOG - Night Flight Good afternoon, birders! Tonight the forecast for the Ithaca, NY area (at least) is looking very interesting. The local forecast is calling for a light NW wind (3-5 mph). Currently, we've got foggy conditions (very low cloud ceiling). If the weather pattern holds true, we may see a slowly increasing cloud ceiling height over the course of the night (thanks Dave Nicosia for this info!). If this condition persists into the night, we may see an excellent night flight of low-flying night migrants (thrushes, warblers, sparrows, etc.). This means that migrants will be easily heard, but it also means that they may temporarily circle around or even temporarily settle down near well lighted areas (lighted athletic fields, mall parking lots, etc.). On the potentially detrimental side of things, this means that birds may be more prone to striking human-made objects that are in unexpectedly in the way of these night-flying birds (for example: radio towers, wind turbines, tall lighted buildings, etc.). The negative side-effects from this type of weather event may include higher than normal numbers of tower-killed and wind turbine-killed birds and an increased incidence of nighttime window-strikes at tall lighted buildings. Local areas to go to listen for migrants and check for birds (healthy or otherwise) include: lighted athletic fields (Schoellkopf Field Stadium or other practice fields around Cornell University and Ithaca College), lighted parking lots (especially those at higher elevations, such as Shops at Ithaca Mall, Ithaca College Campus, Cornell Campus, Cayuga Medical Center, etc.), near tall lighted buildings, and possibly include checking radio towers or wind turbine sites for deceased or injured birds. Hopefully, tonight won't contribute to many deaths, but these conditions invariably result in some level of casualties. Good birding and good night listening. Sincerely, Chris T-H -- Christopher T. Tessaglia-Hymes Field Applications Engineer Bioacoustics Research Program, Cornell Lab of Ornithology 159 Sapsucker Woods Road, Ithaca, New York 14850 W: 607-254-2418 M: 607-351-5740 F: 607-254-1132 http://www.birds.cornell.edu/brp -- Cayugabirds-L List Info: Welcome and Basics Rules and Information Subscribe, Configuration and Leave Archives: The Mail Archive Surfbirds BirdingOnThe.Net Please submit your observations to eBird! -- -- Cayugabirds-L List Info: Welcome and Basics Rules and Information Subscribe, Configuration and Leave Archives: The Mail Archive Surfbirds BirdingOnThe.Net Please submit your observations to eBird! -- -- Cayugabirds-L
Re:[nfc-l] [cayugabirds-l] FOG - Night Flight
As it stands now, I think there is a good chance for low ceilings lasting well into the night. Probably less than 1000 feet all night...there will be fog too... especially over the hills. Winds are expected to be NW around 5-15 knots up through about 5-6 thousand feet through the night. Not sure how many birds will be taking off in the foggy/drizzly air mass in NY...but north into Ontario (which is north of the low cloud shield) there is a chilly mass in place and northerly winds which will increase through the night with a colder air mass pouring south. I would imagine this will get birds going south from Ontario into NY. It will be interesting to see if birds fly above the lower cloud shield or go below it ...or both. There also will be a cloud layer between 2000 and 4000 feet above ground level. This could be a great night...or a bust. Depends on what the birds do. Forecasting weather is hard enough, forecasting what birds will do is beyond my expertise. Maybe someone else can help here with the birds?? If the flight is low enough it may fall below the radar beam and not show up as well. If we see radar echo "blossoming" after sunset then we know there is a flight at 2000-5000 feet above ground level which still could mean many birds below the clouds and in the fog. Since there is also drizzle and light rain showers, the radar is picking up precipitation echoes. I have access to dual polar radar data which will be able to determine between the precipitation and the bird echoes. This will be interesting to see also. In any event, I hope, in some ways, the flight is not too low because the risk of tower and wind turbine kills will go way up. If people go out listening tonight, please share on this listserver. If you live near a tower and it is foggy you may want to check for kills. Let's hope this does not happen. Good luck everyone! Dave Nicosia From: Christopher T. Tessaglia-Hymes To: CAYUGABIRDS-L Sent: Friday, September 28, 2012 3:49 PM Subject: [cayugabirds-l] FOG - Night Flight Good afternoon, birders! Tonight the forecast for the Ithaca, NY area (at least) is looking very interesting. The local forecast is calling for a light NW wind (3-5 mph). Currently, we've got foggy conditions (very low cloud ceiling). If the weather pattern holds true, we may see a slowly increasing cloud ceiling height over the course of the night (thanks Dave Nicosia for this info!). If this condition persists into the night, we may see an excellent night flight of low-flying night migrants (thrushes, warblers, sparrows, etc.). This means that migrants will be easily heard, but it also means that they may temporarily circle around or even temporarily settle down near well lighted areas (lighted athletic fields, mall parking lots, etc.). On the potentially detrimental side of things, this means that birds may be more prone to striking human-made objects that are in unexpectedly in the way of these night-flying birds (for example: radio towers, wind turbines, tall lighted buildings, etc.). The negative side-effects from this type of weather event may include higher than normal numbers of tower-killed and wind turbine-killed birds and an increased incidence of nighttime window-strikes at tall lighted buildings. Local areas to go to listen for migrants and check for birds (healthy or otherwise) include: lighted athletic fields (Schoellkopf Field Stadium or other practice fields around Cornell University and Ithaca College), lighted parking lots (especially those at higher elevations, such as Shops at Ithaca Mall, Ithaca College Campus, Cornell Campus, Cayuga Medical Center, etc.), near tall lighted buildings, and possibly include checking radio towers or wind turbine sites for deceased or injured birds. Hopefully, tonight won't contribute to many deaths, but these conditions invariably result in some level of casualties. Good birding and good night listening. Sincerely, Chris T-H -- Christopher T. Tessaglia-Hymes Field Applications Engineer Bioacoustics Research Program, Cornell Lab of Ornithology 159 Sapsucker Woods Road, Ithaca, New York 14850 W: 607-254-2418 M: 607-351-5740 F: 607-254-1132 http://www.birds.cornell.edu/brp -- Cayugabirds-L List Info: Welcome and Basics Rules and Information Subscribe, Configuration and Leave Archives: The Mail Archive Surfbirds BirdingOnThe.Net Please submit your observations to eBird! -- -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES http://www.NortheastBirding.com/NFC-L_SubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/NFC-L 3) http://birdingonthe.net/mailinglists/NFCL.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
[nfc-l] Heavy Nocturnal Migration Johnson City, NY September 15th, 2012
In one hour, 1015 to 1115 pm I counted 280 SWAINSON'S THRUSHES and 13 GRAY-CHEEKED THRUSHES by nocturnal calls. There were many many other weaker, zips, seeps chips etc that I don't know. There were a couple moments with up to 5 thrushes calling at once! Some were very low and of course many were very high. I probably sampled only the lower portion of the true flight. Good birding. Dave Nicosia -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES http://www.NortheastBirding.com/NFC-L_SubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/NFC-L 3) http://birdingonthe.net/mailinglists/NFCL.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
[nfc-l] Thrushes early this morning
While working the overnight shift at NWS Binghamton I stepped outside for just a few minutes at the airport around 430 am and heard 4 SWAINSON'S THRUSH and 1 WOOD THRUSH. There were also quite a few chips...zeeps and other calls I don't know. It was a heavy flight no doubt. The radar was full of bird echoes not only from our radar site but up and down the east coast. Dave Nicosia -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES http://www.NortheastBirding.com/NFC-L_SubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/NFC-L 3) http://birdingonthe.net/mailinglists/NFCL.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
[nfc-l] Nocturnal Migrant before sunrise this morning
Woke at 430 am and could not fall back asleep. So instead of counting sheep, I decided to sit on my deck and count migrating birds or at least try. I began 450 am and ended at 520 am so it was a solid half hour...then back to sleep! There was a decent flight going on as I could hear many calls up there that were unidentifiable. I did have some lower flyers that I was easily able to ID. Numbers aren't high but again there were many more birds higher up that I could barely hear. 15 VEERY, 9 WOOD THRUSH, 3 INDIGO BUNTINGS, 2 BOBOLINKS, 2 YELLOW WARBLERS and the best bird for me was a SCARLET TANAGER that was flying very low and half singing his song. It was a "whisper" song with a few chip-burrs. The bird was not flying as fast as he persisted for 20-30 seconds while calling. I also heard my resident SCREECH OWL that I have not heard in a long time. I also had an AMERICAN GOLDFINCH call once but this guy probably was a local bird since I regularly have 20-30 at my feeder each day. Dave Nicosia Johnson City, NY -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES http://www.NortheastBirding.com/NFC-L_SubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/NFC-L 3) http://birdingonthe.net/mailinglists/NFCL.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
Re: [nfc-l] First Big Southbound push of fall migrants next few days in northern U.S??
Bill, I have noticed this quite a bit lately too. Birds moving no matter what the wind direction is. Looking at base velocities I did notice very weak velocities on a couple occasions with the predominant direction close to the actual wind direction. This could suggest birds were not favoring a particular direction or were wandering with the winds. Winds were light in these two instances. However, if we do get more northerly winds, wouldn't the movements increase even this early? If not, does this suggest a lot of birds just wandering around, post breeding dispersal etc? Since it is still summer and there is plenty of insect life around, why would most insectivorous species have to be in such a rush to fly south? And if they were in such a rush, they certainly would take advantage of favorable northerly winds, at least you would think they would. This is all pure speculation. I have seen big pushes after fronts in September and October like you state. Since insect life and light is declining fast by this time, this makes more sense since the birds are running out of time and want to get south as fast as possible. So maybe we are witnessing a lot of birds wandering around this early that are not as serious about getting to the tropics? I know some species migrate to the tropics very early so this does not universally apply. It will be interesting nevertheless to see if this first front increases the bird echoes or not. These are all mysteries I guess...which makes the whole migration thing so fascinating. I will also look at the lighter echo nights more closely and compare base velocity signatures with actual wind data to see if we are witnessing wandering or a true southerly component or a component along the wind. Thanks Bill, you have sparked some ideas for me... Best, Dave Nicosia From: Bill Evans To: david nicosia ; NFC- L Sent: Saturday, August 4, 2012 9:00 AM Subject: Re: [nfc-l] First Big Southbound push of fall migrants next few days in northern U.S?? I’ve noticed via flight call monitoring at this time of year (in NY and vicinity) that songbirds tend to move every night regardless of cold fronts -- unless there are strong southerly winds or substantial rain events. Later in the season (mid-September – October) the flights seem more tied to coldfront passage. I have a transect of acoustic monitoring stations across NY this fall, repeating my 1992 VCR effort. As with the Alfred, NY acoustic station last fall, I’m putting the previous night’s warbler and sparrow flight call tallies and tentative species IDs online in the morning at http://www.oldbird.org. By browsing the data you can see that substantial nocturnal migration has been underway in NY over the past three weeks, and there are already interesting species patterns apparent. For example, while Black-and-white Warbler flight calls are just beginning to be detected across eastern NY in the past week, a small but steady pulse of Black-and-white Warbler night flight calling has been occurring over south Texas for the past three weeks. Btw, for anyone interested, the whole audio archive from the Old Bird acoustic stations this season will be available early next year on a ~5 TB external drive. This will have the raw audio files, extracted flight calls, and contributed analyses. Anyone out there recording with the 21c or comparable mic in a relatively clean acoustic environment is welcome to merge their work into this evolving public archive. Many lifetimes needed to get a handle on all this! Bill E From: david nicosia Sent: Friday, August 03, 2012 6:25 PM To: NFC- L Subject: [nfc-l] First Big Southbound push of fall migrants next few days in northern U.S?? All, I have noticed every night that the radar bird echoes are picking up more and more even when the winds are not that favorable. -- NFC-L List Info: Welcome and Basics Rules and Information Subscribe, Configuration and Leave Archives: The Mail Archive Surfbirds BirdingOnThe.Net Please submit your observations to eBird! -- -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES http://www.NortheastBirding.com/NFC-L_SubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/NFC-L 3) http://birdingonthe.net/mailinglists/NFCL.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
[nfc-l] First Big Southbound push of fall migrants next few days in northern U.S??
All, I have noticed every night that the radar bird echoes are picking up more and more even when the winds are not that favorable. A significant cold front, the first of this budding upcoming "cold" season, will be upon the northern U.S soon. It will first cross the upper Plains Saturday and by Saturday Night the mid to upper Plains should be really good and by Sunday night...Great Lakes will have post frontal northwest winds. By Monday night...front clears the east coast but the winds will be lighter and not have as much of a northerly component. Nevertheless, I wouldn't be surprised to see increasing nocturnal migration in the northeast Monday Night too. Good listening (and birding) to all... Dave Nicosia Johnson City, NY -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES http://www.NortheastBirding.com/NFC-L_SubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/NFC-L 3) http://birdingonthe.net/mailinglists/NFCL.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
[nfc-l] Night Flight Calls Johnson City, NY 9/26/11
Got up early this morning and listened for 1 hour between 430 am and 530 am. There was very little wind and light fog. There was little traffic and other noise. Great listening conditions. There was a fairly heavy flight, especially of SWAINSON'S THRUSH. Below are my counts: SWAINSON'S THRUSH: 225 GRAY-CHEEKED THRUSH: 27 HERMIT THRUSH: 7 WOOD THRUSH: 1 BOBOLINK: 1 PALM WARBLER: 2 ROSE-BREASTED GROSBEAK: 4 Unidentified calls- ~ 300 (mostly short chips) Dave Nicosia Johnson City, NY -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES http://www.NortheastBirding.com/NFC-L_SubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/NFC-L 3) http://birdingonthe.net/mailinglists/NFCL.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
[nfc-l] Night calls 9/24/2011
Listened for one hour this evening 1040 pm to 1140 pm...the flight appears high as skies are clear, winds light southwesterly. Not ideal. Many calls very high up and inaudible. But have had some nice fairly low GRAY-CHEEKED THRUSH and SWAINSONS THRUSH calls. Numbers are as follows: SWAINSON'S THRUSH 48 GRAY-CHEEKED THRUSH 10 WOOD THRUSH 12 HERMIT THRUSH 8 THRUSH sp. 21 Also had one INDIGO BUNTING and what I think was a PALM WARBLER. -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES http://www.NortheastBirding.com/NFC-L_SubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/NFC-L 3) http://birdingonthe.net/mailinglists/NFCL.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
[nfc-l] NIght Flight Calls 9/12/11
Got up before dawn to listen for night migrants. Radar echoes were "moderate" as I have seen much heavier bird migration echoes on radar. >From 515 am to 600 am from my deck I heard the following: 85 SWAINSON'S THRUSH 39 WOOD THRUSH ~ 20 THRUSH sp (wood thrushes and/or veeries???) 11 ROSE-BREASTED GROSBEAK ~ 100 other calls unidenified, mainly "chips, zips and zeeps". At first the calls were faint and high up, but as sunrise approached the calls got louder and louder as the birds were descending. By 6 am, there was too much road noise, dogs barking etc... but the flight was not over. Dave Nicosia Johnson City, NY -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES http://www.NortheastBirding.com/NFC-L_SubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/NFC-L 3) http://birdingonthe.net/mailinglists/NFCL.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
[nfc-l] A first look at Dual Polar Radar Imagery for a noctural migration event 8/5/11
All, I now have access to real-time dual polar radar imagery from NWS Pittsburgh from work. Early this morning on 8/5/11, there was a modest migratory echo pattern around the NWS Pittburgh radar. I have the legacy "base reflectivity"or "Z" images that we are accustomed to. In these legacy images, you will see the typical blossoming echo pattern at night that eventually diminishes after sunrise, with small "rings" appearing after sunset which are likely larger birds taking off after sunrise from bodies of water. Then I have a new product "differential reflectivity" or "ZDR" which is the log of the ratio of the returned power to the radar in the horizontal plane vs the returned power in the vertical plane. For a raindrop, when it falls, it becomes flattened and its width is greater in the horizontal plane vs the vertical plane like a watermelon. In this case, the differential reflectivity will be larger than 1. For a sphere, like a hailstone, the ZDR is near zero. A vertical oriented object will be less than zero. See http://www.cimms.ou.edu/~kscharf/pol/zdr.html for more detailed info. Then I also include correlation coefficient (CC)which is a measure of how similar the echoes are within the range bin of the radar. CC above .97 is typically rain. Lower values indicate much more variability in the sampled range bin. So in very basic terms, the higher the CC the more similar the echoes are, the lower the values the more variability of the shapes of the radar echoes. For more info see... http://www.cimms.ou.edu/~kscharf/pol/rhohv.html All these images are uploaded to my flickr site since I don't have a website. In the next few days I will try to brainstorm some ideas as to what we may be seeing. This is all cutting edge and new. I also am not an expert on dual pol yet as I am taking the NWS training classes now. So anyone who has ideas etc feel free to chime in. We may stand to learn a lot. Will we be able to detect passerine movements vs. waterfowl/larger bird movements with this data? Will the resolution be enough for such very general bird size determination? see below for the images: Base Reflectivity (legacy) Z http://www.flickr.com/photos/davenicosia/sets/72157627241598335/ Differential Reflectivity ZDR http://www.flickr.com/photos/davenicosia/sets/72157627365963798/ Correlation Coefficient CC http://www.flickr.com/photos/davenicosia/sets/72157627241652541/ More on this in the next few days...ideas welcome!!! Dave Nicosia Johnson City, NY -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES http://www.NortheastBirding.com/NFC-L_SubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/NFC-L 3) http://birdingonthe.net/mailinglists/NFCL.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
[nfc-l] Nocturnal Calls This morning
Woke up at 4 am this morning and was not that tired so decided to sit out on my deck and see what kind of migration was taking place. I checked the radar and there was fairly heavy migration south of my location with much less farther north. Cloud ceilings were very low as occasional fog clipped the top of the trees on the hill where I live. Winds were from the north as we were north of a frontal system. Migrants were likely descending as they ran into lower cloud ceilings and north winds? Anyway, the calls were low and quite loud but the numbers were not that impressive at least compared to fall. I had the following in 40 minutes of listening: 4 veeries, 4 swainson's thrushes, 3 wood thrushes, 1 bobolink, 2 solitary sandpipers and 19 unidentified zeeps, chips and zitswarblers/sparrows?? That is a total of 33 calls in 40 minutes...almost 1 per minute. Dave Nicosia Johnson City, NY -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES http://www.NortheastBirding.com/NFC-L_SubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/NFC-L 3) http://birdingonthe.net/mailinglists/NFCL.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
Re: [nfc-l] Good migration conditions tonight?
Check out the radars now...there appears to be good migration echoes near and east of the showers and storms. Great fallout conditions for middle atlantic??? From: David La Puma To: Andrew Albright Cc: nfc-l Sent: Sun, May 15, 2011 10:07:33 PM Subject: Re: [nfc-l] Good migration conditions tonight? Without knowing the average distribution of NFC's throughout a season, my hunch is that it should be good. We're still within the "peak flight" period for NY State, which makes me think the Mid-Atlantic still has some solid nights ahead of it. I'm firing up my mic now! cheers David David A. La Puma Postdoctoral Associate New Jersey Audubon Society 600 Route 47 North Cape May Court House, NJ 08210 Office: 609.861.1608 x33 Fax: 609.861.1651 Teaching/Research Profile: http://www.woodcreeper.com/teaching My profiles: Contact me: woodcreeper David La Puma Mid-Atlantic Migration: Big flight underway… S.Fla. Migration: High Intensity Weather Over Florida Latest tweet from woodcreeper: Big flight underway… http://t.co/KV5t494 #spring #migration Follow @woodcreeper Reply Retweet 22:31 May-12 Get this email app! Signature powered by WiseStamp On Sun, May 15, 2011 at 9:38 PM, Andrew Albright wrote: Here outside of Philly (NW) the clouds have disappeared and there is >actually a full moon and winds out of the south. > >Should there still be good possibilities for nfc's tonight or are we >getting too late in the migration season? > >Sincerely, >Andrew Albright >Maple Glen, PA > >-- > >NFC-L List Info: >http://www.NortheastBirding.com/NFC_WELCOME >http://www.NortheastBirding.com/NFC_RULES >http://www.NortheastBirding.com/NFC-L_SubscribeConfigurationLeave.htm > >ARCHIVES: >1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html >2) http://www.surfbirds.com/birdingmail/Group/NFC-L >3) http://birdingonthe.net/mailinglists/NFCL.html > >Please submit your observations to eBird: >http://ebird.org/content/ebird/ > >-- > -- NFC-L List Info: Welcome and Basics Rules and Information Subscribe, Configuration and Leave Archives: The Mail Archive Surfbirds BirdingOnThe.Net Please submit your observations to eBird! -- -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES http://www.NortheastBirding.com/NFC-L_SubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/NFC-L 3) http://birdingonthe.net/mailinglists/NFCL.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
Re: [nfc-l] Bird Echoes on the Radars Early This Morning!
I will definitely check this next couple nights. Makes sensebugs go with the wind, birds use the wind to go where they need to go. Thanks Dave. From: David La Puma To: david nicosia Cc: Samuel Galick ; NFC-L Sent: Wed, February 16, 2011 3:29:13 PM Subject: Re: [nfc-l] Bird Echoes on the Radars Early This Morning! David, Sam, et al. If you check the target velocities against the wind velocity you should be able to determine whether they were birds or not. Insects will move across the radar at similar winds speed and direction as the prevailing winds, while birds will tend to move 10-15kts faster than the reported winds (use the nearest radiosonde data) and often at a bearing slightly different than the prevailing winds (they know where they want to go, and don't mind a little corrective flight). Cheers- and good radar watching, David David A. La Puma Postdoctoral Associate New Jersey Audubon Society 600 Route 47 North Cape May Court House, NJ 08210 Office: 609.861.1608 x33 Fax: 609.861.1651 Websites: http://www.woodcreeper.com http://badbirdz2.wordpress.com Photos: http://www.flickr.com/photos/woodcreeper On Wed, Feb 16, 2011 at 1:13 PM, david nicosia wrote: > Thanks!! I did not know about insect blooms. Neat. > That would make more sense since waterfowl migrate > fairly high up and go day and night to my knowledge. > > It looks like the south will remain in prolonged southerly > winds at 925 mb until friday night when a cold front pushes > southward. There will be a 48 hour period between > today and Friday with southerly winds across > the Gulf of Mexico. Purple Martins likely will make a > push into the deep south. I am not sure > of any other neotropical migrant that begins to > arrive in the Gulf States so early. any thoughts?? > Dave Nicosia > Johnson City, NY > ________ > From: Samuel Galick > To: david nicosia > Cc: NFC-L > Sent: Wed, February 16, 2011 12:55:20 PM > Subject: Re: [nfc-l] Bird Echoes on the Radars Early This Morning! > > Hey Dave, > > I saw this too! But more often than not so early in the season, these can be > insect blooms from recent warm temperatures. There's no denying that this > crazy shot of temperatures will cause some bird migration this week. Other > thoughts or observations from the South or elsewhere? > > Sam > > On Wed, Feb 16, 2011 at 12:48 PM, david nicosia wrote: >> >> While finishing my overnight shift at the National Weather >> Service this morning, I couldn't help notice a sure sign >> of spring: bird echoes on NWS radars from the lower >> Mississippi valley to the lower Ohio Valley! The echoes >> correlated well with southwesterly winds at 925 mb >> of around 20-25 knots. The echoes were very "light" and not >> nearly as extensive as we see later in spring but it is the beginning. >> I wonder if this is waterfowl or early migrant songbirds like >> red-winged blackbirds, robins, grackles, song sparrows etc? >> I always though that blackbirds, robins and the like >> migrated during the day. So would it be waterfowl? H. >> >> Anyway, I expect this early migration to continue through >> the Ohio Valley into the Northeast/Mid-Atlantic states >> as a southerly flow will remain until Friday. I wonder if I >> will see my first migrant red-winged blackbirds, grackles >> and robins by Friday in upstate NY? >> Think Spring!!! >> Dave Nicosia >> Johnson City, NY >> > > > > -- > Sam Galick > Cape May, NJ > sam.gal...@gmail.com > http://www.flickr.com/photos/sgalick/ > > -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://birdingonthe.net/mailinglists/NFCL.html 3) http://www.surfbirds.com/birdingmail/Group/NFC-L Please submit your observations to eBird: http://ebird.org/content/ebird/ --
Re: [nfc-l] Bird Echoes on the Radars Early This Morning!
Thanks!! I did not know about insect blooms. Neat. That would make more sense since waterfowl migrate fairly high up and go day and night to my knowledge. It looks like the south will remain in prolonged southerly winds at 925 mb until friday night when a cold front pushes southward. There will be a 48 hour period between today and Friday with southerly winds across the Gulf of Mexico. Purple Martins likely will make a push into the deep south. I am not sure of any other neotropical migrant that begins to arrive in the Gulf States so early. any thoughts?? Dave Nicosia Johnson City, NY From: Samuel Galick To: david nicosia Cc: NFC-L Sent: Wed, February 16, 2011 12:55:20 PM Subject: Re: [nfc-l] Bird Echoes on the Radars Early This Morning! Hey Dave, I saw this too! But more often than not so early in the season, these can be insect blooms from recent warm temperatures. There's no denying that this crazy shot of temperatures will cause some bird migration this week. Other thoughts or observations from the South or elsewhere? Sam On Wed, Feb 16, 2011 at 12:48 PM, david nicosia wrote: While finishing my overnight shift at the National Weather >Service this morning, I couldn't help notice a sure sign >of spring: bird echoes on NWS radars from the lower >Mississippi valley to the lower Ohio Valley! The echoes >correlated well with southwesterly winds at 925 mb >of around 20-25 knots. The echoes were very "light" and not >nearly as extensive as we see later in spring but it is the beginning. >I wonder if this is waterfowl or early migrant songbirds like >red-winged blackbirds, robins, grackles, song sparrows etc? >I always though that blackbirds, robins and the like >migrated during the day. So would it be waterfowl? H. > >Anyway, I expect this early migration to continue through >the Ohio Valley into the Northeast/Mid-Atlantic states >as a southerly flow will remain until Friday. I wonder if I >will see my first migrant red-winged blackbirds, grackles >and robins by Friday in upstate NY? > >Think Spring!!! >Dave Nicosia >Johnson City, NY > > -- Sam Galick Cape May, NJ sam.gal...@gmail.com http://www.flickr.com/photos/sgalick/ -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://birdingonthe.net/mailinglists/NFCL.html 3) http://www.surfbirds.com/birdingmail/Group/NFC-L Please submit your observations to eBird: http://ebird.org/content/ebird/ --
[nfc-l] Bird Echoes on the Radars Early This Morning!
While finishing my overnight shift at the National Weather Service this morning, I couldn't help notice a sure sign of spring: bird echoes on NWS radars from the lower Mississippi valley to the lower Ohio Valley! The echoes correlated well with southwesterly winds at 925 mb of around 20-25 knots. The echoes were very "light" and not nearly as extensive as we see later in spring but it is the beginning. I wonder if this is waterfowl or early migrant songbirds like red-winged blackbirds, robins, grackles, song sparrows etc? I always though that blackbirds, robins and the like migrated during the day. So would it be waterfowl? H. Anyway, I expect this early migration to continue through the Ohio Valley into the Northeast/Mid-Atlantic states as a southerly flow will remain until Friday. I wonder if I will see my first migrant red-winged blackbirds, grackles and robins by Friday in upstate NY? Think Spring!!! Dave Nicosia Johnson City, NY -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://birdingonthe.net/mailinglists/NFCL.html 3) http://www.surfbirds.com/birdingmail/Group/NFC-L Please submit your observations to eBird: http://ebird.org/content/ebird/ --
Re: [nfc-l] Night Migrants Binghamton/Johnson City NY Wed 9/15/10
Now that I am fully awake...I meant the ratio of Swainson's Thrushes to Veeries is increasing from the past couple weeks with the ratio of Swainson's to Gray-Cheeked thrushes decreasing. This is what happens when you are up in the middle of the night!!! From: david nicosia To: bluewing-gr...@googlegroups.com; NFC-L@cornell.edu Sent: Wed, September 15, 2010 8:20:35 AM Subject: [nfc-l] Night Migrants Binghamton/Johnson City NY Wed 9/15/10 Between 3:15 and 5:15 am heard the following night migrants from my home: SWAINSON'S THRUSH - 631 VEERY- 33 GRAY-CHEEKED THRUSH - 14 WOOD THRUSH- 2 Large flight of SWAINSON'S THRUSH. Ratio of SWAINSON'S to VEERIES is falling... with GRAY-CHEEKED THRUSHES increasing as expected. There were many other calls too that I did not recognize. Dave Nicosia Johnson City, NY -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://birdingonthe.net/mailinglists/NFCL.html 3) http://www.surfbirds.com/birdingmail/Group/NFC-L Please submit your observations to eBird: http://ebird.org/content/ebird/ --
[nfc-l] Night Migrants Binghamton/Johnson City NY Wed 9/15/10
Between 3:15 and 5:15 am heard the following night migrants from my home: SWAINSON'S THRUSH - 631 VEERY- 33 GRAY-CHEEKED THRUSH - 14 WOOD THRUSH- 2 Large flight of SWAINSON'S THRUSH. Ratio of SWAINSON'S to VEERIES is falling... with GRAY-CHEEKED THRUSHES increasing as expected. There were many other calls too that I did not recognize. Dave Nicosia Johnson City, NY -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://birdingonthe.net/mailinglists/NFCL.html 3) http://www.surfbirds.com/birdingmail/Group/NFC-L Please submit your observations to eBird: http://ebird.org/content/ebird/ --
[nfc-l] Good Nocturnal Flight Upstate NY 9/11/10
Got up before sunrise and from my deck I counted the following nocturnal migrants between 515 am and 600 am... 265 SWAINSON'S THRUSH 83 VEERY 9 WOOD THRUSH 6 GRAY-CHEEKED THRUSH 1 SOLITARY SANDPIPER many other chips, zeeps, dzrts etc that I could not id. I thought I heard a DICKCISSEL but was not sure enough to count it. Dave Nicosia Johnson City, NY -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://birdingonthe.net/mailinglists/NFCL.html 3) http://www.surfbirds.com/birdingmail/Group/NFC-L Please submit your observations to eBird: http://ebird.org/content/ebird/ --
[nfc-l] The Next Cold Front
Let me try this again... As Bill Evans has stated previously, the next cold front will pass through the northeast by Wednesday evening. Initially, northern New England will have some post-frontal showers with northern NY having some lake effect rain showers (not quite cold enough yet for the white stuff). South of these areas to the middle Atlantic coast, the winds are projected to be west near the surface to northwest at 850 mb or ~ 5000 feet above ground level(AGL) Wednesday night. As the front moves farther east, the winds try to turn more northwesterly Thursday night from the surface to 850 mb/~5000 feet AGL. Showers may linger in the far north. Friday night- winds are projected to be more northerly... possibly north to northwest from the surface to 850 mb/~5000 AGL. north-northeast winds are forecast across southeast Canada. In addition, the winds will be lightening up. The showers should be gone in northern New England. Could this be the best night for New England? The models are not showing any period of prolonged northeast winds at the low-levels at this point for quite some time looking at the long range projections (10 days). One note of caution: the farther out in time we project the weather the less certainty. The chaotic nature of the atmosphere amplifies small sub-grid model errors into large enough scale errors to change the forecast markedly. So Thursday night and Friday are less certain. That is what happened with Earl and this past weekend's front. Initially the winds were projected to be northwest but it turned out to be more west behind the front. The flight was decent south and west of the northeast U.S. but not in the northeast as Bill predicted. Any ideas or comments...please share. Dave Nicosia Johnson City NY P.S for those not familiar with wind directions- A north winds blows from north to south. A south wind blows from south to north etc. It is the direction the wind is coming from, NOT blowing toward. -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://birdingonthe.net/mailinglists/NFCL.html 3) http://www.surfbirds.com/birdingmail/Group/NFC-L Please submit your observations to eBird: http://ebird.org/content/ebird/ --
[nfc-l] Big Nocturnal Migration possible this holiday weekend in the Northeast/Middle Atlantic States
The unusual warmth will remain with us most of the week in the northeast. This could stall any major migratory push for a time. But... a strong cold front will pass through the eastern seaboard by Friday night after Hurricane Earl passes to the northeast. Northerly winds will prevail beginning late Friday night and continue Saturday night and linger into Sunday night. Could be a great early fall nocturnal flight in the northeast/Mid Atlantic. Dave Nicosia Johnson City NY -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://birdingonthe.net/mailinglists/NFCL.html 3) http://www.surfbirds.com/birdingmail/Group/NFC-L Please submit your observations to eBird: http://ebird.org/content/ebird/ --
Re: [nfc-l] Dual-Polar Radar coming 2011-2012
Thanks Bryan for more details on this. I recently saw a presentation on Dual-polarization and that is where I gleaned the information. I don't have the in-depth knowledge that you do. Our office (WFO Binghamton) is getting the dual-pole upgrade in June 2011. I know we are near the top of the list but there will be others coming on-line before us. You are correct that Norman is a research radar. I don't know if that data is available or not for study before they deploy the others. take care. From: Bryan Guarente To: nfc-l@cornell.edu Sent: Thu, July 8, 2010 4:45:40 PM Subject: Re: [nfc-l] Dual-Polar Radar coming 2011-2012 David, Andy, and other interested parties, According to some Technical Information Notices put out by the National Weather Service (NWS), the beta test for live data starts on November 17th. I haven't heard recently, but I thought the test bed was going to be Wichita, KS. Plans may have changed since I last heard. [Colby any word on this one?] The Norman, OK radar is a research radar, and usually isn't available for regular viewing that I know of. There are other dual-pol radars, multiple on trucks (used during Vortex 2) and a few that are portable, but not really mobile. The Norman radar has been the go-to for dual-pol radars for some time in the U.S., but that will not likely turn over to be operational any time. When the NWS upgrade to all the radars comes along, then most of the nation should be covered with this data. There are other radars (phased array) on the horizon that might be useful for bird detection as well, but I don't know enough about them yet to make any solid statements. I wanted to make a quick clarification about David's original posting. David mentioned that the radars will be able to get the drop-size distributions from their scans, but this is not exactly true. The drop-size distributions may be inferred from the radar imagery, but this will be a poor assumption initially until we learn more about storms from this new source. One of the things, we will get is actually hydrometeor characterization (precipitation type) from the radar scans. However, the algorithm to identify the hydrometeors is not perfect, so there will be some issues. According to the algorithm though, there is a distinct type/color for non-meteorological targets (i.e., birds, insects, and I think dust as well). So it would be significantly easier to pick out possible birds on radar once these are in place, if we get access to this product. Bryan Guarente Instructional Designer The COMET Program University Corporation for Atmospheric Research Boulder, CO -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://birdingonthe.net/mailinglists/NFCL.html 3) http://www.surfbirds.com/birdingmail/Group/NFC-L Please submit your observations to eBird: http://ebird.org/content/ebird/ --
Re: [nfc-l] Dual-Polar Radar coming 2011-2012
I know they have a test radar at Norman, OK but I don't believe the data is operational or available. When I get some time( probably next week) I am going to find out more on the availability of the data and will share with this list. Dave Nicosia From: Andy Martin To: david nicosia ; nfc-l@cornell.edu Sent: Thu, July 8, 2010 11:30:29 AM Subject: Re: [nfc-l] Dual-Polar Radar coming 2011-2012 Dave, Are there any polarimetric radar stations (a beta site) with a web link up and running at the moment that we might view in coming weeks as fall migration starts to intensify? Thanks, Andy Martin Gaithersburg, MD On 7/6/2010 10:26 AM, david nicosia wrote: All, > >The next two years will see all NWS radars equipped with >dual polarization which essentially adds a vertically oriented pulse >to the horizontal oriented pulse of energy. There will be a >slew of new radar products to learn and interpret. > >The advantages of dual polar are that meteorologists will >be able to better determine precipitation types, drop-sized >distributions of raindrops and mixed precipitation. It also >will determine non-meteorological targets better (birds!!). > >There are interesting radar products like differential phase, >which helps us with rainfall drop-sized distributions. I wonder >if this new technology will help determine the size of migrating >birds? Will a flock of geese appear different than >songbirds? This could be an exciting time for "radar" birding. > >For more information on this >check out this website > >http://www.cimms.ou.edu/%7Eschuur/radar.html > >Dave Nicosia >Johnson City, NY > > > -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://birdingonthe.net/mailinglists/NFCL.html 3) http://www.surfbirds.com/birdingmail/Group/NFC-L Please submit your observations to eBird: http://ebird.org/content/ebird/ --
[nfc-l] Dual-Polar Radar coming 2011-2012
All, The next two years will see all NWS radars equipped with dual polarization which essentially adds a vertically oriented pulse to the horizontal oriented pulse of energy. There will be a slew of new radar products to learn and interpret. The advantages of dual polar are that meteorologists will be able to better determine precipitation types, drop-sized distributions of raindrops and mixed precipitation. It also will determine non-meteorological targets better (birds!!). There are interesting radar products like differential phase, which helps us with rainfall drop-sized distributions. I wonder if this new technology will help determine the size of migrating birds? Will a flock of geese appear different than songbirds? This could be an exciting time for "radar" birding. For more information on this check out this website http://www.cimms.ou.edu/~schuur/radar.html Dave Nicosia Johnson City, NY -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://birdingonthe.net/mailinglists/NFCL.html 3) http://www.surfbirds.com/birdingmail/Group/NFC-L Please submit your observations to eBird: http://ebird.org/content/ebird/ --
[nfc-l] Big Migratory Push Next Week Eastern U.S??
All, Being a meteorologist, I can't help myself here, but the potential exists for an early "heat" wave in the eastern 1/2 of U.S beginning Wednesday and lasting into next weekend(April 3-4). A very large and anomalous high pressure system is projected to set up off the southeast U.S coast by Wednesday/Thursday next week and bring strong southerly winds across the Gulf into the Plains/Midwest Wednesday/Thursday and to the northeast/Middle Atlantic Friday to Saturday. This is a classic "Bermuda" High pressure set-up. Very unusual warmth is expected if these projections hold true. I could see widespread 70s and 80s all the way north to the Great Lakes and possibly even to New England. This would certainly mean a major early migratory push with many species arriving very early relative to median arrival dates. The first major influx of neo-tropical migrants would be seen into the southern and even central U.S. check out the following website for 925 mb(few thousand feet AGL) wind projections for late next week http://www.rap.ucar.edu/weather/model/gfs180hr_925_wnd.gif or a loop. http://www.rap.ucar.edu/weather/model/displayMod.php?var=gfs_925_wnd=1 Dave Nicosia Johnson City, NY -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://birdingonthe.net/mailinglists/NFCL.html 3) http://www.surfbirds.com/birdingmail/Group/NFC-L Please submit your observations to eBird: http://ebird.org/content/ebird/ --
[nfc-l] Nocturnal migration will become heavy next couple nights.
All, As this cold high pressure system overhead shifts offshore by Wednesday afternoon a strong southerly flow of air aloft will set up for Wednesday Night. Latest computer models are showing between 40 and 50 knots from the south-southwest between about 2000 and 5000 feet above ground level(925 to 850 mb) Wednesday night. Migration should be very heavy considering the cool north winds of the past couple days holding migrants back. Even tonight with the high pressure system overhead and light winds, migration will pick up and I would expect a fairly heavy flight as well. Also, does anyone have the nocturnal flight call of the dickcissel that they would be willing to share? is it the same as the "flight" call ... http://bna.birds.cornell.edu/bna/species/703/galleries/audio/DICK5-1509a/media_popup_view?t=audio=http://clomedia.ornith.cornell.edu/audio/1509A/1509A.mov from bna online? Thanks Dave Nicosia -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES --
