204 
TETRAONIN^. TETRAO. 
feathers and inner wing-coverts white ; tarsal feathers brownish-grey. 
Female considerably smaller^ with the upper parts greyish-brown, 
barred with duskj^, and minutely undulated ; the fore neck banded 
with brown and pale sienna, the rest of the lower parts as in the male, 
but paler. 
Male, 22, wing 9J. Female, 19|, wing 9. 
From the eastern spurs of the Eocky Mountains, to the Columbia 
River, and northward to Hudson’s Bay. Abundant. Resident. 
Tetrao obseurus, Sat, Long’s Exped. 
Tetrao obseurus, Bonap. Syn. p. 127. 
Dusky Grouse, Tetrao obseurus, Bonap. Amer. Orn. v. iii. pi. 18. 
Tetrao obseurus. Dusky Grouse, Swains. & Rich. F. Bor. Amer. v. ii. p. 344. 
Dusky Grouse, Nutt. Man. v. i. p. 666. 
Dusky Grouse, Tetrao obseurus, Aun. Orn. Biog. v. iv. p. 446. 
* * * Tail very short, transversely arched, much rounded. 
298. 4. Tetrao Cupido, Linn. Pinnated Grouse. 
Feathers of the crown elongated ,* two tufts of lanceolate elongated 
feathers on the sides of the neck, under which is an oblong bare orange- 
coloured space on either side, capable of being inflated ; tail very short, 
much rounded, of eighteen feathers. Male with the upper parts 
blackish-brown, transversely marked with broad undulating bands of 
light yellowish-red ; wing- coverts and secondaries of a lighter brown, 
tinged with grey, and barred with pale red : primary quills greyish- 
brown, with black shafts, and spots of pale reddish on the outer webs, 
tail dark brown, narrowly tipped with dull white, the two middle 
feathers mottled with brownish-red ; loral space, a band from the lower 
mandible over the cheek, and the throat, pale yellowish-red ,* a band 
of blackish- brown under the eye ; extending to the ear-coverts, and 
another on the side of the throat ; cervical tufts, with the feathers 
dark brown on the outer webs, pale yellowish-red and margined with 
dusky on the inner ; lower parts greyish-white, tinged with yellow on 
the sides, with large transverse curved bands of greyish-brown ,* lower 
tail-coverts arranged in three series, dusky at the base, white at the 
end ,* tibial and tarsal feathers grey, obscurely and minutely banded 
with yellowish-brown. Female considerably smaller, without the crest, 
cervical tufts, or air-bags, but otherwise similar to the male. 
Male, 18, 27i. 
Abundant from Texas throughout all the western prairies, to very 
high up the Missouri, Kentucky, Illinois, and Ohio. Almost extir- 
pated in the Middle and Eastern Districts. Resident. 
Pinnated Grouse, Tetrao Cupido, Wils. Amer. Orn. v. iii. p. 104. 
Tetrao Cupido, Bonap. Syn. p. 126. 
Pinnated Grouse, Nutt. Man. v. i. p. 662. 
Pinnated Grouse, Tetrao Cupido, Aun. Orn. Biog. v. ii. p. 490 ; v. v. p. 559. 
