Hi John, That's great information.
I don't hear many nocturnal non-thrush calls compared to you listeners in the East but the ones I do hear are usually in the first several hours after dusk up to about 2 am ish. Meena brought up an interesting point regarding the possibility that call spikes at different locations could be based on from where and how long the birds have been flying. I hadn't considered that. Of course, altitude of the listening location would be a key feature to bring into the analysis as somebody else had stated. Jim Battle Ground, WA On Tue, Sep 6, 2016 at 11:53 AM, John Kearney <john.kear...@ns.sympatico.ca> wrote: > Hi All, > > I believe some of the variability can be accounted for by the species or > family composition of the flight calls you are recording. Below is a graph > of the distribution of flight calls by family for last autumn at an inland, > forested site in Nova Scotia. > > Interesting thread! > > John > > > > > > > > > > *From:* bounce-120756517-28417...@list.cornell.edu [mailto: > bounce-120756517-28417...@list.cornell.edu] *On Behalf Of *Meena Madhav > Haribal > *Sent:* September-06-16 14:17 > *To:* Jeff Wells <jeffwe...@borealbirds.org>; Jim Danzenbaker < > jdanzenba...@gmail.com>; Jerald <jrebel...@gmail.com> > *Cc:* Caitlin Coberly <prai...@dswebnet.com>; NFC-L < > nf...@list.cornell.edu> > > *Subject:* Re: [nfc-l] Intersting pattern in data recording > > > > Hi Jeff and all, > > Thanks for your feed back. It is getting more interesting! I just looked > at the data of Sep 21 2015 when I recorded over thousand calls. As Jeff > mentioned it peaked around 2 am. > > As for Swainsons Thrushes, I have been recording very few calls or no > calls at all, when some other people in my locality have been reporting > lots of them. Just as crow flies a mile down stream from me from > Schoellkopf's stadium someone recorded several of them the other night. > So it seems it is very interesting. > > > > I will look at my data from last year's sometimes soon. > > > > So what makes them to peak at different times on different days? Does it > denote from where and how long they have been making their journey? > > > > BTW, Jeff I still have your bug book. If send me your mailing address I > will mail it to you. > > > > Cheers > > Meena > > > > Meena Haribal > > Ithaca NY 14850 > > 42.429007,-76.47111 > > http://www.haribal.org/ > > http://meenaharibal.blogspot.com/ > > Ithaca area moths: https://plus.google.com/118047473426099383469/posts > > Dragonfly book sample pages: http://www.haribal.org/ > dragonflies/samplebook.pdf > > > > > > > > > ------------------------------ > > *From:* Jeff Wells <jeffwe...@borealbirds.org> > *Sent:* Tuesday, September 6, 2016 1:01 PM > *To:* Jim Danzenbaker; Jerald > *Cc:* Caitlin Coberly; Meena Madhav Haribal; NFC-L > *Subject:* RE: [nfc-l] Intersting pattern in data recording > > > > A few years ago, a then undergraduate at Colby College here in Maine named > Andy McEvoy used two of my nocturnal flight call datasets in his Senior > Honors Thesis. The locations were from Deline, Northwest Territories from > Fall 2006 and from Lesser Slave Lake Bird Observatory, Alberta from Fall > 2007. > > > > Attached is an image from Andy’s thesis showing graphs of how many times > in each season a particular hour after sunset recorded the peak number of > calls. It was not the same every night. > > > > Jeff Wells > > > > *From:* bounce-120756138-12790...@list.cornell.edu [ > mailto:bounce-120756138-12790...@list.cornell.edu > <bounce-120756138-12790...@list.cornell.edu>] *On Behalf Of *Jim > Danzenbaker > *Sent:* Tuesday, September 06, 2016 12:16 PM > *To:* Jerald > *Cc:* Caitlin Coberly; Meena Madhav Haribal; NFC-L > *Subject:* Re: [nfc-l] Intersting pattern in data recording > > > > All, > > > > Out here in southwestern Washington State, I have a steady flow of very > vocal Swainson's Thrushes flying over every night. Like others on this > list serve, I've noted that the number of calls increasing dramatically > about an hour or so before dawn. I've often wondered if they are calling > this commonly all night and are just more easily heard as they descend or > whether they call more frequently near dawn. > > > > Keeping my eyes and ears skyward. > > > > Jim Danzenbaker > > Battle Ground, WA > > > > On Tue, Sep 6, 2016 at 9:01 AM, Jerald <jrebel...@gmail.com> wrote: > > In Delaware, my calls steadily increase throughout the night, peaking > about an hour and a half before sunrise (4:45-5:00 approximately). > > > > On Tue, Sep 6, 2016 at 11:45 AM, Caitlin Coberly <prai...@dswebnet.com> > wrote: > > Recording in central Michigan, my calls were peaking at about 4:00 > AM—right by the shores of Lake Huron. My guess is that is when they are > flying low and looking to land. I’d have to look at my old data, but I > think my inland recorders (not near woodlots) did not see the same peak. > Fall and spring were very different as well. > > > > > > > > *From:* bounce-120754960-10103...@list.cornell.edu [mailto: > bounce-120754960-10103...@list.cornell.edu] *On Behalf Of *Meena Madhav > Haribal > *Sent:* Tuesday, September 06, 2016 5:48 AM > *To:* NFC-L > *Subject:* [nfc-l] Intersting pattern in data recording > > > > Hi all, > > I have been recording in Ithaca NY for last few days. I am finding an > interesting pattern in number of calls recorded per hour (between 9.00 pm > to 5.30 am). My recordings of the calls peak around 3.00 am in the morning. > So I am not sure why that pattern. Whether that is the time when they are > ready to touch down so they fly low in search of good locations or > something else is happening? I am curious to know how others are finding. > If any Ithaca recorders are out there have you looked at the pattern? Bill > Evans who has been recording form Danby area in Ithaca sent me a pattern > for one day and that day it peaked around 1.00 am and it also at higher > elevation of 1500 ft, while I am at at 821 feet. > > > > Here is the actual data. > > > > > > > > Any thoughts are welcome! > > > > > > Meena Haribal > > Ithaca NY 14850 > > 42.429007,-76.47111, 821 ft > > http://www.haribal.org/ > > http://meenaharibal.blogspot.com/ > > Ithaca area moths: https://plus.google.com/118047473426099383469/posts > > Dragonfly book sample pages: http://www.haribal.org/ > dragonflies/samplebook.pdf > > > > > > > > > ------------------------------ > > *From:* bounce-120754645-10061...@list.cornell.edu < > bounce-120754645-10061...@list.cornell.edu> on behalf of John Kearney < > john.kear...@ns.sympatico.ca> > *Sent:* Tuesday, September 6, 2016 7:09 AM > *To:* 'Preston Lust'; NFC-L > *Subject:* RE: [nfc-l] Interesting Call > > > > Hi Preston and all, > > I downloaded the calls you sent. The first one is a “double-up” warbler > mostly likely one in the genus *Oreothlypis *(Nashville, Tennessee, and > Orange-crowned). I would lean toward Tennessee for this one due to the nice > bend in the spectrogram. When I first looked at the second call, I thought > it was a Magnolia Warbler due to the spacing between humps, but on closer > examination its high frequency, number of humps, depth between humps, and > somewhat descending character fit better with Cape May Warbler. > > John > > > > John Kearney > > Carleton, Nova Scotia > > > > *From:* bounce-120753747-28417...@list.cornell.edu [ > mailto:bounce-120753747-28417...@list.cornell.edu > <bounce-120753747-28417...@list.cornell.edu>] *On Behalf Of *Preston Lust > *Sent:* September-05-16 20:58 > *To:* nf...@list.cornell.edu > *Subject:* [nfc-l] Interesting Call > > > > Night of 9/01-02/16; Westport, Connecticut > > > > I recorded an interesting call that night (the night of a small cold > front), and was wondering if anyone could aid me in its identification. > Thank you for any input. > > -- > > *NFC-L List Info:* > > Welcome and Basics <http://www.northeastbirding.com/NFC_WELCOME> > > Rules and Information 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<http://birdingonthe.net/mailinglists/NFCL.html> > > *Please submit your observations to eBird > <http://ebird.org/content/ebird/>!* > > -- > > -- > > *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> > > BirdingOnThe.Net <http://birdingonthe.net/mailinglists/NFCL.html> > > *Please submit your observations to eBird > <http://ebird.org/content/ebird/>!* > > -- > > -- > > *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> > > BirdingOnThe.Net <http://birdingonthe.net/mailinglists/NFCL.html> > > *Please submit your observations to eBird > <http://ebird.org/content/ebird/>!* > > -- > > > > > > -- > > *Jerald* > > > > -- > > *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> > > BirdingOnThe.Net <http://birdingonthe.net/mailinglists/NFCL.html> > > *Please submit your observations to eBird > <http://ebird.org/content/ebird/>!* > > -- > > > > > > -- > > Jim Danzenbaker > Battle Ground, WA > 360-702-9395 > jdanzenba...@gmail.com > > -- > > *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> > > BirdingOnThe.Net <http://birdingonthe.net/mailinglists/NFCL.html> > > *Please submit your observations to eBird > <http://ebird.org/content/ebird/>!* > > -- > > -- > > *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> > > BirdingOnThe.Net <http://birdingonthe.net/mailinglists/NFCL.html> > > *Please submit your observations to eBird > <http://ebird.org/content/ebird/>!* > > -- > -- Jim Danzenbaker Battle Ground, WA 360-702-9395 jdanzenba...@gmail.com -- 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/ --
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