Cassin’s Finch at Lassen Volcanic National Park
10,000 Birds
AUGUST 26, 2015
This is the male of the species (click on photos for full sized images). If you have read many of my posts here at 10000 Birds, you may have noticed that much of my research on bird species is derived from Birds of North America Online (BNA), a collaboration of the Cornell Lab of Ornithology and the American Ornithologists’ Union.
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