=300a. Canadian Ruffed Grouse= (_B. u. togata_). Similar to No. 300, but slightly grayer above; tail generally gray; bars on breast and belly darker and better defined.
Range.--Spruce forests of New Brunswick, Nova Scotia, Maine northern New Hampshire, northern Vermont and south to higher mountains of Massachusetts and northern New York; west to eastern slope of coast ranges of Oregon, Washington and British Columbia; north to James Bay.
=300b. Gray Ruffed Grouse= (_B. u. umbelloides_). Similar to No. 300a, but grayer; prevailing color of upperparts, including crown, gray; tail always gray.
Range.--Rocky Mountains, from Colorado north to latitude 65° in Alaska, east to Mackenzie and poplar woods of western Manitoba.
=300c. Oregon Ruffed Grouse= (_B. u. sabini_). Similar to No. 300, but much darker, prevailing color of upper parts rusty brown; tail always rusty brown.
Range.--Pacific coast ranges from Cape Mendocino, California, north to British Columbia.
=301. Willow Ptarmigan= (_Lagopus lagopus_). L. 15. Bill large, more than .4 deep at base; tail _black_, narrowly tipped with white. _Ad._ [Male] _Summer._ Throat and upper breast rusty brown. _Ad._ [Male] _Fall._ Rustier and more finely marked above. _Ad._ [Female]. _Summer._ Above black barred with buff and tipped with white; below buff barred with black; middle of belly whitish. _Ad._ [Female]. _Fall._ Much like fall male. _Ads._, _Winter_. White, tail black tipped with white; _no_ black before eye. _Notes._ Song, _kû-kû-kû-kû_ while ascending five or ten yards in the air; a hard rolling _kr-r-r-r_ when descending. (Nelson.)
Range.--Arctic Regions; in America breeding south to Lat. 55° in winter migrating south to Lat. 50°; recorded once from Penobscot Co., Maine, and once from Manchester, Mass.
=301a. Allen Ptarmigan= (_L. l. alleni_). Similar to No. 301, but [Female] more finely marked; shafts of primaries, at all seasons, strongly black spreading to the web of the feather.
=302. Rock Ptarmigan= (_Lagopus rupestris_). L. 14. Bill _less_ than .4 deep at base; tail black. Always to be known from No. 301 by its smaller bill. _Ad._ [Male] _Summer._ Above irregularly barred and mottled with gray and rusty buff; below barred black and white and rusty buff. _Ad._ [Male] _Fall._ Above minutely speckled black, gray and buff, the prevailing color being grayish brown. _Ad._ [Male] _Winter._ White, lores and tail black. _Ad._ [Female] _Summer._ Above black barred with rusty and margined with whitish; below rusty barred with black and tipped with whitish. _Ad._ [Female] =Fall.= Like fall [Male]. _Ad._ [Female] _Winter._ Like winter [Male] but no black before eye.