Anyone else see a really beautiful telemetry/GPS study in this?
When I’ve tracked raptors, they’ve been relatively silent. One little peregrine I tracked did not move more than 5 miles overnight. Probably less than 1 mile. Another one we tracked moved, we think, more than 20 on a good thermal front. Both in the fall. The one that stayed put was on a calm evening. ~Caitlin From: bounce-41633657-10103...@list.cornell.edu [mailto:bounce-41633657-10103...@list.cornell.edu] On Behalf Of Michael O'Brien Sent: Thursday, March 01, 2012 6:26 PM To: Christopher T. Tessaglia-Hymes Cc: NFC-L Subject: Re: [nfc-l] Night Migrating Raptors Chris, Those photos are amazing! And they brings up an interesting general question about nocturnal migration by raptors. How much do they move at night? In Cape May I see plenty of evidence of at least limited nocturnal movement. We regularly see American Kestrels, Sharp-shinned Hawks, and Northern Harriers present in numbers (sometimes already high overhead) at first light when they were not present the day before. Also I have seen Osprey and Peregrine head out in apparent migration flight over Delaware Bay well after sunset. But the only nocturnal flight call I have heard from a raptor was from an Osprey which gave acouple of "tew" calls overhead a good two hours before sunrise. I wonder if others have seen or heard evidence of nocturnal migration by raptors. thanks, Michael Michael O'Brien Victor Emanuel Nature Tours www.ventbird.com _____ From: "Christopher T. Tessaglia-Hymes" <c...@cornell.edu> To: "NFC-L" <nf...@list.cornell.edu> Sent: Thursday, March 1, 2012 4:01:22 PM Subject: Re: [nfc-l] Night Migrating Raptors Below is a link of a few pictures I managed to capture of a couple of the individuals. Unfortunately, due to our operations, I was not able to take time for extensive documentation. It was a very neat spectacle to have witnessed. Some details are at right of the album at the link, below. https://picasaweb.google.com/112522159565855378380/NightMigratingRaptors Sincerely, Chris T-H Currently at sea in the Gulf of Mexico, aboard the M/V Emily Bordelon. On Mar 1, 2012, at 4:41 AM, Christopher T. Tessaglia-Hymes wrote: Although these birds weren’t making vocalizations, but it has been really cool to witness. I’m on the M/V Emily Bordelon about 150 miles WNW of Tampa, FL, working on recovering oceanographic research instruments. We’re conducting 24-hour operations with deck lights blazing. from approximately 07:10 to 07:25 GMT (02:10 to 02:25 AM EST) the deck crew and I observed at least three simultaneous SWALLOW-TAILED KITES, 1 Laughing Gull, and a single OSPREY approach the vessel during an extended full-stop drifts. This was at about N28 26.491 by W85 27.459. I managed to get some half-decent photos of the Kites as they drifted over the vessel. At another point, from approximately 08:40 to 09:20 GMT (02:40 to 03:20 AM EST) we were visited by at least two more night migrating SWALLOW-TAILED KITES. I did not obtain photos of those birds. This was at about N28 17.256 by W85 32.837. I imagine there are several birds in migration across the Eastern Gulf of Mexico at this point and we should expect to have more observations at the next couple of nighttime stations. Good birding! 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: <http://www.northeastbirding.com/NFC_WELCOME> Welcome and Basics <http://www.northeastbirding.com/NFC_RULES> Rules and Information <http://www.northeastbirding.com/NFC-L_SubscribeConfigurationLeave.htm> Subscribe, Configuration and Leave Archives: <http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html> The Mail Archive <http://www.surfbirds.com/birdingmail/Group/NFC-L> Surfbirds <http://birdingonthe.net/mailinglists/NFCL.html> BirdingOnThe.Net Please submit your observations to eBird <http://ebird.org/content/ebird/> ! -- -- 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: <http://www.northeastbirding.com/NFC_WELCOME> Welcome and Basics <http://www.northeastbirding.com/NFC_RULES> Rules and Information <http://www.northeastbirding.com/NFC-L_SubscribeConfigurationLeave.htm> Subscribe, Configuration and Leave Archives: <http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html> The Mail Archive <http://www.surfbirds.com/birdingmail/Group/NFC-L> Surfbirds <http://birdingonthe.net/mailinglists/NFCL.html> BirdingOnThe.Net Please submit your observations to eBird <http://ebird.org/content/ebird/> ! -- -- NFC-L List Info: <http://www.northeastbirding.com/NFC_WELCOME> Welcome and Basics <http://www.northeastbirding.com/NFC_RULES> Rules and Information <http://www.northeastbirding.com/NFC-L_SubscribeConfigurationLeave.htm> Subscribe, Configuration and Leave Archives: <http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html> The Mail Archive <http://www.surfbirds.com/birdingmail/Group/NFC-L> Surfbirds <http://birdingonthe.net/mailinglists/NFCL.html> BirdingOnThe.Net 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/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/ --
