WILLOW PTARMIGAN. 
301. Lagopus lagopus. 15 inches. 
These ere Grouse-like birds, feathered to the toe-nails; they 
have many changes of plumage, in winter being nearly pure 
white and in summer largely reddish brown, mottled and 
barred with black. This bird has a black tail and bill, the 
latter very stout. In the breeding plumage they have a bright 
red bare spot over the eye. 
Nest. —They nest on the ground in hollows of the rocks filled 
with moss, lining the nest with leaves and grass, and sometimes 
a few feathers. They lav from six to sixteen eggs, which 
have a ground color of buff, heavily speckled, blotched and 
marbled with blackish brown (1.75x 1.25). 
ROCK PTARMIGAN. 
302. Lagopus rupestris. 14 inches. 
This is somewhat smaller than the above, with a smaller bill, 
and in summer the plumage is more gray than brown. Its 
nesting habits are the same as the others; eggs slightly smaller 
(1.70x 1.20). 
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