PRAIRIE SHARP-TAILED GROUSE. 1 35 



base, black at tip. Total length, about i6| inches; wing, 8^; 

 tail, 5i. 



Adult Female is slightly smaller than the male, and the central 

 tail feathers are shorter. Otherwise resembles him in her plum- 

 age. 



Downy Young. — Upper parts, buff, irregularly marked with 

 lines and spots of black, broadest upon the back; wings, barred 

 with white and black; under parts, lemon yellow, inclined to 

 buff upon the breast; bill, light yellow; culmen, brown. 



