773. Chrysomitris tibetana.
The Sikhim Siskin.
Chrysomitris thibetana. Hume, Ibis, 1872, p. 107; Brooks, Ibis, 1872, p. 469; Hume, S. F. vii, p. 416; id. Cat. no. 750 bis ; Sharpe, Cat. B. M. xii, p. 226, pl. iii.
Coloration. Male. Upper plumage olive-green, the back and scapulars streaked with blackish ; an indistinct patch on the nape, a broad supercilium, a streak under the eye and ear-coverts joining the supercilium behind the ear-coverts, the chin, throat, breast, abdomen, and under tail-coverts deep dull yellow, the sides of the body greener and more or less streaked with brown ; ear-coverts and a broad moustachial streak olive-green; tail dark brown, margined with olive-yellow ; lesser and median wing-coverts olive-green ; larger coverts dark brown, tipped and edged with olive-green ; quills dark brown, margined on the outer web with olive-green.
Female. Not very dissimilar to the male, but with the whole upper plumage and most of the lower streaked with brown, the lower plumage being also very pale yellow; wing, tail, and marks on side of the head as in male.
Bill and legs (in dry state) dusky flesh-colour.
Length about 4.2 ; tail 1.6; wing 2.7 ; tarsus .5; bill from gape .4.
Distribution. The interior of Sikhim, at high elevations, bordering on Tibet*.