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| | Black Guillemot |
 | | Black Guillemot, Cepphus grylle, Cayuga Lake, Aurora, Cayuga Co., NY, 30 October 2004. |
 | | Found at Myers Point, Tompkins Co. on 23 October 2004 by Paul Hurtado, the winter plumaged Black Guillemot was a nearly unbelievable addition to the Cayuga Lake Basin checklist. |
 | | The bird showed dark in the white wing patches, and as can be seen by some of the video captures, the dark consisted of two fl lines, thickest on the ventral side. |
| birds.cornell.edu /crows/black_guillemot.htm (245 words) |
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