
Dendragapus obscurus
John James Audubon, Birds of America (1827-1838). Public domain.
The dusky grouse (Dendragapus obscurus) is a species of forest-dwelling grouse native to the Rocky Mountains in North America. It is closely related to the sooty grouse (Dendragapus fuliginosus), and the two were previously considered a single species, the blue grouse.
Source: Wikipedia
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