(863) Phylloscopus maculipennis.
The Grey-paced Willow-Warbler.
Abrornis maculipennis Blyth, Ibis, 1867, p. 27 (Nepal). Phylloscopus maculipennis. Blanf. & Oates, i, p. 406.
Vernacular names. None recorded.
Description. A broad, but broken, coronal streak and supercilia very pale whitish buff; rest of head, nape and hind neck dark olive-brown shading into yellowish green on the back, scapulars and lesser wing-coverts; lower rump bright sulphur-yellow; greater wing-coverts dark brown, boldly edged with yellow forming a distinct wing-bar; median coverts with a similar less well-defined bar; quills brown edged with olive-green; tail brown, edged with green, and with the three outer pairs white with the terminal half of the outer webs brown ; lores and behind the eye dark brown; chin, throat and upper breast grey; remainder of lower plumage yellow.
Colours of soft parts. Iris dark brown ; bill black; legs and feet fleshy or yellowish brown.
Measurements. Total length about 100 mm.: wing 46 to 52 mm.; tail 31 to 34 mm.; tarsus about 18 mm.; culmen 7 to 3 mm.
Distribution. Himalayas, Sutlej River to Eastern. Assam,. North and South of the Brahmaputra, Manipur.
Habits. This Warbler is a resident bird between 5,000 and 8,000 feet, some birds moving down to the foot-hills and the plains in their immediate vicinity in Winter but the majority remaining in the hills above 2,500 feet. It probably does not breed in the hills South of the Brahmaputra, though it may be seen there occasionally in early May. Those birds I saw were all in forest, and were busily hunting for insects high up in the topmost branches. It was some years before I discovered their habits, but once these were known they proved to be very numerous. Several individuals were often seen hunting in company.