The Sage Grouse (Centrocercus urophasianus) is the largest grouse in North America, where it is known as the Greater Sage-Grouse. Its range is sagebrush country in the western United States and southern Alberta and Saskatchewan, Canada. A population of smaller birds, known in the U.S. as Gunnison Sage-Grouse, were recently recognized as a separate species.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.