During the morning descent of thrushes calling, I was pleasantly surprised to record another nice example of a BICKNELL'S THRUSH flight call. This bird called at 6:29AM.
This bird's call peaks out at about 5.23kHz, well above any Gray-cheeked Thrush NFC that I've seen. Most of the Gray-cheeked Thrush flight calls that I have recorded, peak out in the 3.5-4.5kHz frequency band, with a very occasional call that might peak out every so slightly above 4.5kHz. The overall duration of this call is shorter than the one from the other night, this lasting only 208ms. The quality and timbre of the call is likened to a much higher-pitched and wheezy-sounding "Gray-cheeked Thrush". An edited copy of the call is attached, again to remove the cricket band and slightly amplify the sound. A screen grab of the call is also attached. 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 -- 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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