Sorry all, it appears I was mistake in my earlier statement. I made an excel chart of calls for three nights this week which I have attached below. As you can see, the peak seems to be around 22:00 on all three nights. However, I only listen live until 23:00, and use automatic detectors for the rest of the night, so the data after 11 is most likely skewed. The winds were from the north on all three nights.
On Tue, Sep 6, 2016 at 1:17 PM, Meena Madhav Haribal <m...@cornell.edu> wrote: > 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] *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://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 > 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NFCs 9-2 through 9-4.xls
Description: MS-Excel spreadsheet
