n. a partridge-like game bird, Bonasa umbellus, occurring in many subspecies across Canada.
See also: ruffed grouse
- 1963  Most alarming decline of all is in grouse, with the tally dropping almost 50 per cent . . . Most of the drop was in ruffeds, though blue, sharptail and franklin were all down. This is what biologists mean when they speak of the cyclic population CRASH of grouse.