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Grouse, family (Tetraonidae) of chicken-like game birds usually brown, gray, or black in plumage, native to cool regions of the Northern Hemisphere. They are ground birds living on open moorland or heath, and are well camouflaged. Three species moult into a white or particolored winter plumage for camouflage in snow. Grouse feed largely on plant material—shoots, buds, and fruits—but will also eat insects. In many species males perform elaborate courtship displays at established display grounds, or “leks.” Common North American species include the ruffed grouse (Bonasa umbrellus) and the spruce grouse (Dendragapus canadensis).

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21st Century Webster's Family Encyclopedia21st Century Webster's Family Encyclopedia - Grand Rapids to Hadron