Collocalia unicolor, Jerd.
103. :- Collocalia nidifica, Latham. :- Jerdon's Birds of India, Vol. I, p. 183; Butler, Deccan; Stray Feathers, Vol. IX, p. 380.
THE INDIAN EDIBLE-NEST SWIFTLET.
Length, 4.75 to 5 ; expanse, 11.5 ; wing, 4.5 to 4.75 ; tail, 2.25, slightly forked and the feathers very broad.
Of a glossy cinereous-brown or mouse-brown color, darkest on the head, wings, and tail, and tinged with steel-blue or green, paler beneath.
The Edible-nest Swiftlet is a hot weather visitant to the Vingorla Rocks, where it breeds; it has not been recorded from any other part of our district.