G/^AV RUFFED GROUSE. 89 



various points on the Yukon, and feeds upon the spruce 

 buds, which give a disagreeable flavor to the flesh. 



BO NASA UM BELL US UMBELLOIDES. 



Geographical Distribution. — Rocky Mountain Region from 

 Colorado, through Western Dakota, Montana, Idaho, and Brit- 

 ish Columbia to the Yukon in Alaska. 



Adult Male. — Upper parts, mostly gray, some chestnut and 

 black markings upon the neck, upper back, and wings; pale gray 

 spots upon rump, all the feathers vermiculated with black; neck 

 tufts, black, with metallic green reflections; under parts, white 

 and buff mixed, especially so upon the chest, crossed with brown 

 bars, changing to black on the flanks; under tail-coverts, gray, 

 mottled with black and tipped with white; tail, pure gray, nar- 

 rowly barred and mottled with black, and a subterminal black 

 band. Total length about 14I inches; wing, 7^; tail 6. 



Adult Female resembles the male, and is without neck tufts. 



