. Handbook of birds of the western United States, including the great plains, great basin, Pacific slope, and lower Rio Grande Valley . :; Fig. -03. Distribution. — Colorado. In Colorado the local name for the ptarmigan is white (piail. GENUS TYMPANUCHUS. General Characters. — Sides of in-ck with a conspicuous tuft of stiff,l)ointed feathers and an inflatable air sac ; luad with a slight soft crest;. 130 GROUSE, PARTRIDGES, (QUAILS, ETC. tail short, rounded; tarsus scantily feathered to toes; toes extensivelywebbed at base. KEY TO SPECIES OF TYMPANUCHUS. 1. Bars of back and rump single,
. Handbook of birds of the western United States, including the great plains, great basin, Pacific slope, and lower Rio Grande Valley . :; Fig. -03. Distribution. — Colorado. In Colorado the local name for the ptarmigan is white (piail. GENUS TYMPANUCHUS. General Characters. — Sides of in-ck with a conspicuous tuft of stiff,l)ointed feathers and an inflatable air sac ; luad with a slight soft crest;. 130 GROUSE, PARTRIDGES, (QUAILS, ETC. tail short, rounded; tarsus scantily feathered to toes; toes extensivelywebbed at base. KEY TO SPECIES OF TYMPANUCHUS. 1. Bars of back and rump single, broad and solid black. 2. Larg-er americanus, p. 130. 2. Smaller. Coast of Texas • . attwateri, p. 131. r. Bars of back and rump treble, a brown bar inclosed between two nar-row black bars pallidicinctus, p. 131. 305. Tyrapanuchus americanus (Eeich.). Pkairie Hen. Adult male. — Upper parts yellowish brown and white, crossed by smgleblack bars; under parts white, barred with brown ; head deep buff except for blackish brown stripes andi^CfIF^., blotches ; neck with tufts above a^tl«i^^K*^\ ,^^^ .-«^-si*i_ inflatable air sac, feathers ofiW-.;.!^*-f^^ tufts or more in leng-thwith broad rounded female: similar, butwith neck tufts rudimentary.^. ^ ,, Young: upper parts light brownish, feathers with con-spicuous white mesial streaks and large black blotches. Male: l
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