Little Swift vs White-rumped Swift

Little Swift

Apus affinis

Small23 gUrban

Little swifts are readily identified by their small size. Their wingspan is only 33 cm compared to 42 cm in the case of common swift. Their plumage is black except for a white throat and rump, the white rump patch extending onto the flanks. They have a short square tail, with all rectrices round-tipped. The flight is fluttering like that of a house martin, and the call is a high twittering. Like other swifts they are very short-legged. The legs are used for clinging to vertical surfaces only.

ID text from Wikipedia, CC BY-SA 4.0

Photo: Derek Keats · CC BY 2.0

White-rumped Swift

Apus caffer

Small22 gShrubland

This 14–15.5 cm (5.5–6.1 in) long species has, like some relatives, a short forked tail and long swept-back wings that resemble a crescent or a boomerang. It is entirely dark except for a pale throat patch and a narrow white rump. It is similar to the closely related little swift, but is slimmer, darker and has a more forked tail and a narrower white rump. Voice: This is a quiet species compared to little swift, but a twittering trill is sometimes given.

ID text from Wikipedia, CC BY-SA 4.0

Photo: Derek Keats from Johannesburg, South Africa · CC BY 2.0

Photos and recordings are credited to their authors under the licence shown. Full profiles: Little Swift and White-rumped Swift.