• WordNet 3.6
    • n Bonasa ruffed grouse
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Century Dictionary and Cyclopedia
    • n bonasa A genus of gallinaceous birds, of the family Tetraonidæ, containing especially B. betulina, the hazel-grouse of Europe, and B. umbella, the ruffed grouse, pheasant, or partridge of North America. They have a ruffle of feathers on each side of the neck, a broad fan-shaped tail, partly feathered shanks, and a small crest. They are woodland birds, noted for their habit of drumming, whence probably their name, the noise being likened to the bellowing of a bull.
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In literature:

Partridge, OR ruffed grouse (Bonasa umbellus).
"Wake-Robin" by John Burroughs