Re: [nfc-l] migrating cuckoos

[Michael O'Brien]

Ken, 


You may have been hearing a push of migrants, but I wonder if these birds could 
have been moving around locally. I've quite often heard cuckoos, particularly 
Black-billed, give nocturnal flight calls in midsummer (June and July) and I 
suspect these are birds moving locally. It's hard to know of course, but even 
in May I often feel like some of the cuckoos I hear overhead are locals. One 
big day trick for getting Black-billed Cuckoo at night is to listen in good 
breeding habitat. Whether that works because they are locals or because 
migrants call more often over good habitat I don't know, but it does seem to 
work. It would be interesting to do some summer monitoring to see what patterns 
emerge. 


best, 
Michael 


Michael O'Brien 
Victor Emanuel Nature Tours 
www.ventbird.com 
- Original Message -
From: "Kenneth Victor Rosenberg"  
To: "CAYUGABIRDS-L"  
Cc: "NFC-L"  
Sent: Wednesday, June 6, 2012 11:10:30 PM 
Subject: [nfc-l] migrating cuckoos 

I was surprised to step out in my driveway (Ithaca NY) this evening and hear 4 
BLACK-BILLED CUCKOOS in 15 minutes (3 in the first 5 minutes). Maybe caught the 
tail end of a migration burst, but at least some mysterious migrants are 
continuing to move at night. 

KEN 


Ken Rosenberg 
Conservation Science Program 
Cornell Lab of Ornithology 
607-254-2412 
607-342-4594 (cell) 
k...@cornell.edu 


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Re: [nfc-l] migrating cuckoos

[Christopher T. Tessaglia-Hymes]

I've been recording and then hand browsing most nights this spring. Even on 
crummy nights with drizzle or light north winds, at least one Black-billed 
Cuckoo vocalized each night. Total Black-billed Cuckoo calls (some are 
duplicate birds heard calling twice as they pass over, once distant and once 
clearly audible) over Etna, NY thus far (including some partial song notes) is: 
190. Total Yellow-billed Cuckoo migrant songs or song fragments over Etna, NY 
thus far is: 41 - these birds seem to clearly sing only once and cannot be 
heard repeating again. Most nights I don't seem to start recording until 10:00 
or 11:00pm, just due to personal logistics, so I know I've missed some birds 
moving earlier in the night, soon after end of civil twilight. Lots of other 
cool migrants have been able to be picked up including many Alder Flycatchers 
and multiple probable Willow Flycatchers, plus several migrant Virginia Rails 
and at least two Soras. A few Swainson's Thrushes and an occasional 
Gray-cheeked Thrush are still heard migrating (as of last night). It's been 
really neat hand browsing these data; I've saved clips of lots of interesting 
and unidentified bird sounds, including shorebirds. Quiet nights can be hand 
browsed in about 45 minutes, but busier nights from earlier in the spring could 
take upwards of 3-4 hours (because I'm selecting and saving all audio clips).

Sincerely,
Chris T-H

On Jun 6, 2012, at 11:10 PM, Kenneth Victor Rosenberg wrote:

I was surprised to step out in my driveway (Ithaca NY) this evening and hear 4 
BLACK-BILLED CUCKOOS in 15 minutes (3 in the first 5 minutes). Maybe caught the 
tail end of a migration burst, but at least some mysterious migrants are 
continuing to move at night.

KEN


Ken Rosenberg
Conservation Science Program
Cornell Lab of Ornithology
607-254-2412
607-342-4594 (cell)
k...@cornell.edu


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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


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[nfc-l] migrating cuckoos

[Kenneth Victor Rosenberg]

I was surprised to step out in my driveway (Ithaca NY) this evening and hear 4 
BLACK-BILLED CUCKOOS in 15 minutes (3 in the first 5 minutes). Maybe caught the 
tail end of a migration burst, but at least some mysterious migrants are 
continuing to move at night.

KEN


Ken Rosenberg
Conservation Science Program
Cornell Lab of Ornithology
607-254-2412
607-342-4594 (cell)
k...@cornell.edu


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