U. S. NATIONAL MUSEUM 



BULLETIN 162 PLATE 49 



Southern White-tailed ptarmigan in Winter Plumage 

 March 13, 1902. 



Southern White-tailed ptarmigan Beginning to acquire Nuptial 



Plumage 



May 30, 1900. Both photographs taken by E. R. Warren in Gunnison County, Colo., and presented 



by him. 



