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White-rumped Swifts breed in much of sub-Saharan Africa, and have expanded into Morocco and southern Spain.
Prominent white rump is best field mark, together with pure white underparts; but cf. the two white-rumped swifts (p. 187) and Red-rumped Swallow.
The White-rumped Swift (Apus caffer) is a small swift.
APODIDAE Apus caffer (White-rumped Swift)
WHITE-RUMPED SWIFT Apus caffer.
Wörterbuch für ornithologische Begriffe