(524) Hydrocichla ruficapilla.
The Chestnut-backed Fobktail.
Enicurus ruficapillus Temm., Pl. Col., iii, pi. 534 (1832) (Pallambang, Sumatra). Hydrocichla ruficapillus. Blanf. & Oates, ii, p. 87.
Vernacular names. None recorded.
Description.— Adult male. Forehead white, surrounded by black; crown, nape and sides of neck chestnut; rest of head, chin, throat, back and wings black; a broad white band formed by the tips of the greater coverts and bases of secondaries; the latter also tipped with white; tail black with white tips and broad white bases, the outer two pairs pure white; breast and flanks white, the feathers boldly fringed with black; remainder of lower plumage white.
Colours of soft parts. Iris brown to black; bill black, legs and feet white to fleshy-white. In this bird as in all the other Fork-tails, the joints are often more pink or livid in colour than the rest of the leg.
Measurements. Total length about 200 mm.; tail 85 to 93 mm.; tail 67 to 79 mm.; tarsus 28 mm.; culmen 20 to 21 mm.
Female. The chestnut extends nearly all over the back and on to the wing-coverts, otherwise as in the male.
The Young are like the female but duller and very heavily marked below.
Nestling has the lower parts dull white, fringed with dull brown.
Distribution. From Borneo, through the Malay Peninsula to South-West Siam and Tenasserim to Mt. Nwalabo.
Nidification and Habits. Nothing recorded.