152 



KEY TO THE BIRDS OF EASTERN NORTH AMERICA. 



Tarsus, entirely feathered ; 

 axillary plumes, smoky 

 gray with white shafts, 

 and tipped with white; 

 the male has the breast 

 black ; the female has the 

 breast tawny brown, black, 

 and white. 



Canada Grouse. 



Spruce Partridge. 



Dendrayapus canadensis. 

 See No. 237. 



Section 2. The following species have the greater portion 

 of the primaries white. 



Depth of bill at base, .40 or more ; no black on lores ; shafts of secondaries, not 

 black. 



Willow Ptarmigan, 



Lagopus lagopus. 

 See No. 240. 



