1079. Chaetura sylvatica.
The White-rumped Spine-tail.
Acanthylis sylvatica, Tickell, J. A. S. B. xv, p. 284 (1846) ; Jerdon, B. I. i, p. 170; id. Ibis, 1871, p. 354; Blanford, J. A. S. B. xxxviii, pt. 2, p. 169; Hume, J. A. S. B. xxxix, pt. 2, p. 114; Ball, S. F. iii, p. 289; Walden, Ibis, 1876, p. 356. Chaetura sylvatica, Sclater, P. Z. S. 1865, p. 614; Ball, S. F. vii, p. 202 ; Hume, Cat. no. 95; Davison, S. F. x, p. 346; Hartert, Cat. B. M. xvi, p. 489.
Coloration. Upper parts black or blackish brown, with slight green gloss ; a broad white band across the rump ; chin, throat, and breast greyish brown; abdomen and lower tail-coverts white, the two colours passing into each other; wing beneath blackish and glossy. In young birds the white feathers of the rump, abdomen, and lower tail-coverts have black shafts.
Bill, legs, and feet black; iris dark brown.
Length about 4.25 ; tail 1.5; wing 4.2 ; tarsus .4. The under tail-coverts extend nearly to the end of the tail.
Distribution. The forest country from Bengal to the Godavari and west as far as the Wyne Gunga, also Seoni in the Central Provinces, Garhwal and Sikhim in the Himalayas, the Wynaad, and Coonoor in the Nilgiris. Widely spread but local.
Habits, &c. A forest species, generally seen in smaller or larger parties hawking insects amongst high trees, especially near streams, or frequenting open cultivated spaces in the jungle. The flight is not, I should say, much more rapid than that of the Palm-Swift. Nidification unknown.