(809) Tribura taczanowskia
The Chinese Bush-Warbler.
Locustella taczanowskia Swinhoe, P.Z.S., 1871, p. 355 (Trans-Baikal). Tribura intermedia. Blanf. & Oates, i, p. 363.
Vernacular names. None recorded.
Description. Whole upper plumage and visible portions of closed wings and tail russet-brown, the shafts of the tail-feathers white underneath and tail above obsoletely cross-rayed; lores and a short narrow supercilium white; ear-coverts hair-brown, with white shafts; lower plumage white, suffused with brownish buff on flanks and breast; under tail-coverts brown edged with white.
Colours of soft parts. Iris hazel-brown ; upper mandible and tip of lower dark brown, remainder of bill white to horny-white ; legs whity flesh-colour, claws pale horn.
Measurements. Total length about 135 mm.; wing 52 to 56 mm.; tail 53 to 58 mm.; tarsus 17 to 18 mm.; culmen about 12 mm.
The young bird is bright yellowish buff below and above is rather brighter than the adult.
Distribution. In Summer this Bush-Warbler is found in Central Asia from Lake Baikal to the Ussuri and in Winter in South China, Burma and the intervening countries. A specimen of Seebohm's, labelled Bhutan Doars, seems to be of this species.
Nidification. Dybowski describes the nest and eggs as similar to those of the Grasshopper-Warbler, and five eggs taken by him vary in size between 17.4 x 14.0 and 18.5 x 14.0 mm.
Habits. In Winter this bird is very common in Lower Burma, where Oates found it frequenting paddy-fields, stubble and grass. He describes it as a great skulker, very loth to fly and seldom showing itself. He states that it appears to feed a great deal on the ground.