The greater sage-grouse is the largest grouse in North America. Its lives in the sagebrush country of the western United States and southern Alberta and Saskatchewan. 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. (Source: Wikipedia).