Little [House] Swift
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Apus affinis
Confined in Southern Europe & Africa.
Vagrants to Britain.
Winters in South Africa.
Adults are 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.