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Rock Ptarmigan Video Stock Footage
The rock ptarmigan is 34–36 cm (13–14 in) long (tail 8 cm (3.1 in)) with a wingspan of 54–60 cm (21–24 in). It is smaller than the willow ptarmigan by about 10%. The male's "song" is a loud croaking. The rock ptarmigan is seasonally camouflaged its feathers moult from white in winter to brown in spring or summer. The breeding male has greyish upper parts with white wings and under parts. In winter, its plumage becomes completely white except for the black tail. It can be distinguished from the winter willow ptarmigan by habitat—the rock ptarmigan prefers higher elevations and more barren habitat it is also smaller with a more delicate bill.
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