THE AMERICAN MUSEUM OF NATURAL HISTORY 



are other bird-inhabited islets, the surrounding treeless hills 

 and Mount Shasta in the distance. 



Arctic Alpine Bird Life. Eight thousand feet above the 

 sea, where the summits of the Rocky Mountains, Sierras 

 and Cascade Range reach above timber-line to the regions 

 of perpetual snow, there is bird life such as appears in this 

 group: white-tailed ptarmigans, snow finches and pipits. 

 Great white anemones, heather and other flowers are in 

 bloom. The studies for this group were made in the 

 Canadian Rockies about fifteen miles north of Laggan at 

 the Ptarmigan Lakes. Mount Temple, Mount Redoubt and 

 other peaks of the range are easily identified. 



Sage Grouse. This well known game bird is found in the 

 high sage brush on the Plains, from western Nebraska and 

 western Dakota north to the Canadian boundary, west to 

 eastern Oregon and northeastern California, east to the 

 Sierras and south through Utah and Nevada. The studies 

 for the group were made at Medicine Bow, Wyoming, on 

 the line of the Union Pacific Railroad. Elk Mountain is at 

 the right and the mountains in the distance belong to the 

 Snowy Range of Colorado. In the group may be seen a 

 male grouse strutting and wooing a mate. 



Prairie Chicken. The courtship demonstrations of the 

 prairie hen occur during the mating season, from March 

 until early May. Before daybreak the male birds go through 

 most surprising antics in their efforts to attract the females. 

 The feather tufts on each side of the neck are erected, the 



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