974. Tetrao parvirostris

974. Siberian Capercailly.
Tetrao parvirostris, Bp. Compt. Rend. xiii. p. 880 (1856) ; Ogilvie Grant, Cat. B. Br. Mus. xxii. p. 66 ; T. urogalloides, Midd. Sib. Reis. ii. pl. 2, p. 195, Taf. xviii. figs. 1-3 (1851 nec. Nilss.) ; Elliot, Monogr. Tetr. pl. vi. ; David and Oust. Ois. Chine, p. 390 ; T. urogalloides var. sachalinensis, Bogdanoff, Consp. Av. Ross. fasc. i. p. 122 (1884).
Male ad. (Saghalien). General colour of plumage black ; head and neck glossed with purplish blue, the breast with bottle-green ; upper parts dull black, the scapulars, secondaries, and larger wing-coverts with terminal white spot ; upper tail-coverts irregularly tipped with white ; under parts brownish black slightly spotted with white, and indistinctly vermiculated on the flanks ; tail uniform black, much graduated and long ; bill black ; iris brown ; bare skin round the eye scarlet ; bill much smaller than in T. urogallus, 0.9 from the end of feathering to tip ; wing 15.3, tail 14.9, the outer feather 4.2 shorter than the middle ones, tarsus 3.0 inch. The female is distinguishable from that of T. urogallus not only by the white on the scapulars, secondaries, and wing-coverts, and on the upper tail- coverts, but by the long, greatly graduated tail.
Hab. The Transbaikal country to the southern portion of the sea of Ochotsk ; the lower Amoor and the island of Saghalien ; of rare occurrence in the mountains of the north of China.
This Capercailly is said to differ considerably from T. urogallus, both in its play or “lek” and in its note, but it frequents the pine forests like that species. Its “lek” is, however, almost always performed, like that of T. tetrix, on the ground, and seldom on a tree. The nest is a mere depression scratched in the ground, and the eggs, which are deposited late in May, resemble those of T. urogallus, but are more oblong in shape, and measure about 2.38 by 1.60.

A Manual Of Palaearctic Birds
Dresser, Henry Eeles. A Manual of Palaearctic Birds. Vol. 2. 1903.
Title in Book: 
974. Tetrao parvirostris
Book Author: 
H. E. Dresser
Page No: 
Common name: 
Siberian Capercailly
Black-billed Capercaillie
Tetrao urogalloides
Vol. 2

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