Pratincola caprata, Linn.
481. :- Jerdon's Birds of India, Vol. II, p. 123; Butler, Guzerat; Stray Feathers, Vol. III, p. 474; Deccan, Stray Feathers, Vol. IX, p. 404 ; Murray's Vertebrate Zoology of Sind, p. 141; Swinhoe and Barnes, Central India ; Ibis, p. 124.
THE WHITE-WINGED BLACK ROBIN.
Length, 5 ; wing, 2.75 ; tail, 2.2; tarsus, 0.75; bill at front, 0.38.
Bill black ; irides deep-brown; legs brown-black.
Male, black ; a longitudinal band on the wings, the rump and the upper tail-coverts, and the middle of the lower part of the abdomen, vent, and under tail-coverts, white. When newly moulted, the black is fringed with brown edgings, which gradually get worn away.
Female, dusky-brown, the feathers edged paler with a rufous rump and upper tail-coverts; beneath pale reddish-brown, albescent on the throat and vent; abdomen slightly streaked ; vent and under tail-coverts tinged with rufous.
The White-winged Black Robin is a common permanent resident throughout the district; it, however, almost disappears from some parts during the breeding season, which is from March to May. They build flat saucer-shaped or pad-like nests in holes in the sides of wells or banks, occasionally in a bush, but even then the nest rests actually on the ground. The nest is composed of grass, fine roots, vegetable fibres, &c, and usually contains four eggs, but three incubated ones are often found and at times as many as five.
They are moderately broad ovals in shape, of a greenish-white or greenish-blue color, densely but finely speckled with brownish-red. They differ greatly in size, but average 0.67 inches in length by about 0.55 in breadth.