372. Tribura luteiventris.
The Brown Bush-Warbler.
Tribura luteoventris, Hodgs. P. Z. S. 1845, p. 30 : Horsf. & M. Cat. i, p. 335; Jerd. B. I. ii, p. 161; Hume, N. & E. p. 329; Brooks, J. A. S. B. xliii, pt. ii, p. 246; id. S. F. iii, p. 285; Hume, Cat. no. 522 ; Oates in Hume's N. & E. 2nd ed. i, p. 231. Pseudoluscinia luteoventris (Hodgs.), Blyth, Cat. p. 182. Horornis erythrogenys, Hume, Ibis, 1872, p. 108; id, S. F. iii, p. 410. Tribura erythrogenys (Hume), Hume, Cat. no. 522 bis. Lusciniola luteiventris (Hodgs.), Seebohm, Cat. B. M. v, p. 125.
The Plain-brown Reed- Warbler, Jerd.
Coloration. In summer the whole upper plumage, wings, and tail are rufous-brown ; lores and a very short indistinct supercilium greyish white ; sides of the head rufous, the ear-coverts with pale shafts ; chin, throat, middle of breast and of abdomen dull white; under tail-coverts and sides of the body dull rufous-brown, the former narrowly tipped with dull white.
In winter the plumage is much the same as in summer, but the sides of the head are brighter rufous (T. erythrogenys), and the sides of the neck, breast, body, and the under tail-coverts are a bright ochraceous brown.
The young resemble the adults in winter plumage, but are suffused with yellow beneath, and they are tinged with ochraceous on the sides of the head and neck.
Iris hazel; bill pale brown ; legs dark fleshy-brown (Cockburn) ; in summer the upper mandible of the bill is almost black, in winter nearly entirely yellow.
Length about 5.5 ; tail 2.6 ; wing 2.1 ; tarsus .7; bill from gape .6.
The type of T. erythrogenys and another specimen labelled the same in the Hume Collection are in my opinion nothing else than T. luteiventris in fresh spring plumage of the first year. The type was procured on the 20th May at Darjiling. This species was described by Hume in 1872. Brooks has written on the label of the type " luteiventris, I think;" and there can be little question he is right. Hume, however, so late as 1881 (S. P. xi, p. 206, note) was still of the opinion that T. erythrogenys was " very marked." I regret that I cannot find any character by which to separate it from T. luteiventris.
Distribution. Nepal, Sikhim, the Bhutan Doars, and the Khasi hills. In the Pinwiil collection in the British Museum there are some specimens from Simla, and others described as having been procured in the N. W. Himalayas. This species does not appear to be migratory beyond accommodating itself to climate by moving up and down the slopes of the mountains.