Hi, all. Here's a paper with some relevance to the current discussion: Decandido, R., R. O. Bierregaard, Jr., M. S. Martell, and K. L. Bildstein. 2006. Evidence of nocturnal migration by Osprey (Pandion haliaetus) in North America and Western Europe. Journal of Raptor Research 40:156-158. Ted Floyd tfl...@aba.org Lafayette, Boulder County, Colorado, USA
________________________________ From: bounce-41634266-9667...@list.cornell.edu [mailto:bounce-41634266-9667...@list.cornell.edu] On Behalf Of Magnus Robb Sent: Friday, March 02, 2012 1:47 AM To: Michael O'Brien Cc: Christopher T. Tessaglia-Hymes; NFC-L Subject: Re: [nfc-l] Night Migrating Raptors I have sometimes heard Peregrines while recording nocturnal migration, and I know that Sergey Gashkov in Tomsk, Siberia has also recorded them. However, there is no guarantee that these Peregrines were migrating. Here in Portugal, our Peregrines are resident. I have also seen at least one from the Arctic during the non-breeding season, and F p calidus are probably regular migrants in small numbers. However, I would guess that the sounds I have heard are from local birds interacting while hunting numerous migrating Turtle Doves, with the help of streetlights or moonlight. cheers, Magnus On 2 Mar 2012, at 2:26:14, Michael O'Brien wrote: 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 <http://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: 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/> ! -- -- 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/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/> ! -- -- 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: 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/ --
