any of a family (Tetraonidae) of gallinaceous game birds with a round, plump body, feathered legs, feather-covered nostrils, and mottled feathers, as the ruffed grouse or sage grouse
Any of various plump, chickenlike game birds of the family Tetraonidae, chiefly of the Northern Hemisphere and having mottled brown or grayish plumage.