Re: [nfc-l] Night Migrating Raptors

Just one more observation per Jerry Liguori... http://utahbirders.blogspot.com/2011/01/swainsons-hawks- migrate-at-night.html On Fri, Mar

Re: [nfc-l] Night Migrating Raptors

Ken, I don't think there were any nighttime observations of raptors on the platform study per se, but some of the observers (not me unfortunately) did record small kettles of Missippii Kites which would have had to have been flying part of the distance in the dark just, as you say, because of

RE: [nfc-l] Night Migrating Raptors

Chris- Thank you for your neat observations, and the pictures.  I want to share a similar observation with you.When leading a birding trip to Yucatan for Audubon in late February 1976 I encountered apparently migrant Swallow-tailed Kites coming off the Gulf at Rio Lagartos.  We were walking east

Re: [nfc-l] Night Migrating Raptors

Another way to test this idea of nocturnal migration in raptors loosely would be for birders in areas of the Great Basin/SW US to cover an isolated migrant trap over multiple days. Accipiters and kestrals commonly use these spots in migration. You wouldn't really know if a bird moved locally,

Re: [nfc-l] Night Migrating Raptors

I would suspect that the nocturnal movements by raptors will turn out to be primarily over water -- where the total flight range involved necessitates a partly nocturnal crossing. Are there any other night-time records from the Gulf oil platform work a while back? Satellite tracking data may

Re: [nfc-l] Night Migrating Raptors

One thing I forgot to mention that when I read Jason's post reminded me of it, when I counted in Veracruz in 2001, one of our largest Broad Winged Hawk days we still had very high (hard time seeing them with unaided eye) Broad-wings at sunset. It would be very interesting to figure out when

Re: [nfc-l] Night Migrating Raptors

All, First, fantastic images! I wonder if these are thew fist images of kites during their nocturnal migration? Just a couple observations to add to the discussion. When I was doing some work with Project Puffin on Seal Island NWR, back in 2002 I think, I saw an adult Bald Eagle headed

RE: [nfc-l] Night Migrating Raptors

I also had the same thought. May be slower birds arrive late. From: bounce-41634916-10061...@list.cornell.edu [mailto:bounce-41634916-10061...@list.cornell.edu] On Behalf Of Kevin J. McGowan Sent: Friday, March 02, 2012 9:45 AM To: Michael O'Brien; Christopher T. Tessaglia-Hymes Cc: NFC-L

Re: [nfc-l] Night Migrating Raptors

Very cool observation! Swallow-tailed kites are known to migrate at night over water between Florida and Cuba. See the linked thesis by Gina Zimmerman who tracked kites with satellite and radio transmitters.

RE: [nfc-l] Night Migrating Raptors

You know, it takes longer than one period of daylight to cross the Gulf, so any diurnal migrant trying to do so would have to fly at least part of the time at night. Kevin Kevin McGowan Ithaca From: bounce-41633657-10073...@list.cornell.edu [mailto:bounce-41633657-10073...@list.cornell.edu]

Re: [nfc-l] Night Migrating Raptors

Hi All, Since we are on the discussion of night migrants raptors... one of our Golden Eagles started moving a little over an hour before sunrise in the spring last year. Our transmitters are programmed to start collecting data at sunrise, this one malfunctioned and was recording data 24 hours a

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