noun
: a No. American grouse ( Bonasa umbellus ) valued as a game bird in wooded parts of the United States and Canada whose male is about 17 inches long, is varied with rufous, black, and gray and has a dark band on the tail and tufts of large glossy black feathers on the sides of the neck, and is noted for drumming with its wings in the breeding season — compare partridge , pheasant