Brown-backed Needletail

Brown-backed Needletail is among the largest swifts in the world. At 23 cm it is bigger than the alpine swift, with a heavy barrel-like body. It is dark brown except for a white undertail that extends onto the flanks, and its name comes from the spined ends of the tail feathers, which are more prominent than in other needletails. Notable features include very short legs, used mainly for clinging to vertical surfaces, never settles voluntarily on the ground and lives on the insects it catches in the air (Wikipedia, general species account). (Wikipedia, general species account).

It is a resident breeder in hill forests of southern India and Southeast Asia, reaching the Greater Sunda Islands and Palawan. It nests in rock crevices in cliffs, laying three to five eggs, and its flight is very fast even for a swift. Two subspecies are recognised (Wikipedia, general species account). The brown-backed needletail (Hirundapus giganteus), or brown needletail, is a large swift. These birds have very short legs which they use only mainly for clinging to vertical surfaces. (Wikipedia, general species account).