(1103) Passer montanus dilutus.
The Afghan Tree-Sparrow.
Passer montanus dilutus Richmond, Proc. U.S. Nat. Mus., xviii, p. 575 (1895) (Kashgar). Passer montanus. Blanf. & Oates, ii, p. 240 (part).
Vernacular names. None recorded.
Description. A paler bird than any of the other races of Tree-Sparrow; the crown and nape more vinous than maroon ; the upper parts fulvous-chestnut rather than rufous-chestnut and the rump and upper tail-coverts light yellowish-brown ; below much paler.
Colours of soft parts as in the Common Tree-Sparrow but the bill seems never to be entirely black, the base always being paler.
Measurements. Wing 78 to 83 mm. ; tail 50 to 55 mm.: tarsus 18 to 19 mm.; culmen about 10 to 11 mm.
Distribution. Turkestan, East Persia, Afghanistan, Yarkand and Gilgil, straggling into India along the North-West Frontier.
Nidification and Habits. Similar to those of the Malay Tree-Sparrow.