PRAIRIE SHARP-TAILED GROUSE. 135 
base, black at tip. Total length, about 164 inches; wing, 84; 
tail, 54. 
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. 
