indian swiftlet Aerodramus unicolor

A small, brown, nondescript swift with a shallow tail fork. Upperparts are darker brown than the underparts, while the rump is marginally paler. Very similar otherwise to the more widespread Asian Palm-Swift, except that Indian Swiftlet lacks the latter’s longer, deeply forked tail. Mostly seen in the hills, where it breeds in caves, but can disperse to the plains during monsoons or immediately after summer showers, hawking insects in mixed flocks of swifts.