Greater sage-grouse

The greater sage-grouse (Centrocercus urophasianus) is the largest grouse in North America. Its range is sagebrush country in the western United States and southern Alberta and Saskatchewan, Canada. It was known as simply the Sage Grouse until the Gunnison Sage-Grouse was recognized as a separate species in 2000. The Mono Basin population of Sage Grouse may also be distinct.
Adults have a long, pointed tail and legs with feathers to the toes. Adult males have a yellow patch over the eye, are grayish on top with a white breast, a dark brown throat and a black belly; two yellowish sacs on the neck are inflated during courtship display. Adult females are mottled gray-brown with a light brown throat and dark belly. 
by wikipedia