152 



KEY TO THE BIRDS OF EASTERN NORTH AJIERICA. 



T;u-sus, 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 brovvn, black, 

 and white. 



Canada Qrouse. 



Spruce Partridge. 



Dendrayapns caiiadennis 

 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 lagopns. 

 See No. 240. 



