Yesterday evening, I re-reviewed about an hour or so of time that I couldn't review yesterday morning and picked up some additional sounds. Next, I'm going to try to run a detector on that night to see how well that works.
The new calls heard include: Common Yellowthroat Black-billed Cuckoo - a third very nice Black-billed Cuckoo call at 00:02 (5/7/2012) - this was technically the first cuckoo that night, but the third found call in the recording. Veery flight note at 00:08 (5/7/2012) - first of the season for me. Spotted Sandpiper series of calls at 00:57 (5/7/2012) - also a first of the season for me. I intended to record in the rain last night, to see what might migrate in-between the rain showers and breezy South winds, but accidentally failed to start the recording. Doh! This morning, there were a couple of new arrivals in a migratory stopover habitat patch near me (the Hawthorn Orchard - Swainson's Thrush, Swamp Sparrow and, actually, Yellow Warbler, which has been absent for several days now), and many of the birds which had been there may have moved on, just last night. Good night listening! Sincerely, Chris T-H -- Christopher T. Tessaglia-Hymes TARU Product Line Manager and 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 From: [email protected] [mailto:[email protected]] On Behalf Of Christopher T. Tessaglia-Hymes Sent: Monday, May 07, 2012 12:15 PM To: NFC-L Subject: [nfc-l] Night Migration - 6-7 May 2012 - Relatively Quiet Last night, I *finally* got my Evans-style flowerpot microphone (Knowles Element EK3029c) back up on the roof (Etna, NY) and recorded from about 10:00pm to 5:00am, as a dry run. Early this morning, I quickly browsed through my sounds, looking for anything of interest. WeatherTAP showed very strong reflectivity early last night to the WSW of Ithaca, NY, but nothing that would dump huge quantities of birds into our local area. Highlights from the night include: 1 Black-throated Green Warbler (in full song at 10:13pm) 2 Black-throated Blue Warblers 1 Chipping Sparrow 1 White-throated Sparrow 1 Black-crowned Night-Heron (02:16am) 1 Virginia Rail (04:11am) 2 Black-billed Cuckoos (one at 02:19am and one at 04:14am; attached audio file: 120507_16-bit Black-billed Cuckoos.wav) 1 Rose-breasted Grosbeak 3 Ovenbird-like upsweeps (not Ovenbirds) 1 Indigo Bunting There was one call that I find very strange. It is about 18ms in duration, descending; the frequency range is 16.17kHz to 17.99kHz. It is inaudible without slowing it down. It doesn't quite sound right for Flying Squirrel, of which we have visiting the feeders at times, but even those are somewhat audible in the recordings. This note is completely inaudible and there are no other reference sounds around it in time. I'm a bit baffled. If anyone has any ideas, I'd appreciate it. The sound is attached: 120507.023016_16-bit_17kHz Seep.wav. You can use software such as Raven to slow it down and view it spectrographically - I have removed the LF band of peepers and other ambient noise and amplified the signal. Lastly, there was a single distant, but close-enough truck backing up in the silence of the night. I really thought I had recorded a Saw-whet Owl. Upon reviewing the entire clip series, it is indeed a just-out-of-earshot truck backing up. There were very few other reference sounds to easily identify it as the backup beeps of a truck. But, what the heck is a service truck doing out at 03:00am? Do dump trucks really operate that early in the outskirts of Ithaca? Nice diversity, very quiet night, though. I look forward to recording again tonight, even though it will be raining - South winds are in the forecast for us - we'll see. Sincerely, Chris T-H -- Christopher T. Tessaglia-Hymes TARU Product Line Manager and 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 -- 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/[email protected]/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: 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/[email protected]/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/ --
