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From: | |
Reply To: | Robert Z. Norman |
Date: | Mon, 31 May 2010 17:18:58 -0400 |
Content-Type: | text/plain |
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On Saturday morning, May 29, the weekly Hanover Conservation Council bird trip
went to the Mink Brook Natural Area east of Route 10. Near the end of our trip
we heard a vireo giving a few short phrases. At first glace I saw its bluish head,
and thought it was a blue-headed vireo. But good looks at it showed it was a warbling
vireo. However, its vocalizations, though not many, were in character like those
of a blue-headed or red-eyed, or any other vireo but a warbling vireo.
Sibley's description of the song of the warbling vireo is like the one we are
all familiar with. However, on the page showing the yellow-throated vireo he writes,
"Song in vireos is learned. There are numerous records of Yellow-throated singing
like a Blue-headed, and vice versa; presumably the same pehnomenon occurs with
other species as well and should be considered when identifyhing birds by sound."
Could this bird have leared a song so different from the usual warbling vireo
song?
Another suggestion was that it might be a female.
The bird was on Brook Road between 0.1 and 0.2 miles from Route 10.
Bob Norman
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