Small swift of rainforest regions; fairly common but often overlooked. Difficult to distinguish from other small swifts. Overall dark blackish-brown, with barely paler throat and brownish rump. Chapman’s appears stockier and broader-winged than other species and lacks any gray or white on rump; has more obvious tail than Short-tailed Swift. Flight is quick with fluttery wingbeats, much like other Chaetura swifts. Calls are choppier and lower-pitched than those of other small swifts. Forages for insects over canopy of mature forest and second growth, and along rivers, often with other small swifts. Wide range over much of Amazonia.