150 



KEY TO THE BIRDS OF EASTERN NORTH AMERICA. 



Group 2. Wing, more than 5 inches long. 



Section 1. The following species do not have the greater 

 portion of the primaries white. 



A tuft of black feathers cm sides of the neck; tarsus not entirely feathered; 

 axillary plumes, white barred with brown. 



Ruffed Grouse "Partridge." 



Bonasa umbelliis, and races. 

 See No. 238. 



Tarsus, entirely feathered; axillary plumes, entirely white; no elongated 



tufts of feathers on sides of neck ; tail, pointed. 



Prairie Sharp-tailed Grouse. 



Pedioccetes phadiancllus campestris. 

 See No. 247. 



Tarsus, entirely feathered; axillary plumes, white; sometimes with faint bars 

 near tip ; a tuft of teu or more elongated feathers on each side of the neck; 

 tail, not pointed; the ends of the neck plumes are not pointed, and the axillary 

 plumes are very rarely barred on the whole feather, as in the Martha's Vineyard 

 species. 



Prairie Hen. Pinnated Grouse. 

 Tympanuchus americunus, 

 See No. 245. 



