White-rumped swift
Kingdom
Phylum
Class
Order
Family
Genus
SPECIES
Apus caffer

The white-rumped swift (Apus caffer ) is a species of swift. Although this small bird is superficially similar to a house martin, it is not closely related to that passerine species. The resemblances between the swallows and swifts are due to convergent evolution reflecting similar life styles.

Appearance

This 14–15.5 cm 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.

Habits and Lifestyle

Like other swifts they have very short legs that they use only for clinging to vertical surfaces. They never settle voluntarily on the ground, and spend most of their lives in the air, feeding on insects that they catch in their beaks. Like other swifts they drink on the wing.

Lifestyle
Seasonal behavior
Bird's call

Diet and Nutrition

Mating Habits

White-rumped swifts breed in much of sub-Saharan Africa, and have expanded into Morocco and southern Spain. The populations in Spain, Morocco and the south of Africa are migratory, although their wintering grounds are not definitively known. Birds in tropical Africa are resident apart from seasonal movements.

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This species appropriates the nests of little swifts and those swallows which build retort-shaped nests. In Europe and north Africa, this usually means the red-rumped swallow, but south of the Sahara other species like wire-tailed swallow are also parasitised. The original owners of the nests are driven away, or the white-rumps settle in the nest and refuse to move. Once occupied, the nest is lined with feathers and saliva, and one or two eggs are laid.

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Population

References

1. White-rumped swift Wikipedia article - https://en.wikipedia.org/wiki/White-rumped_swift
2. White-rumped swift on The IUCN Red List site - https://www.iucnredlist.org/species/22686882/131921201
3. Xeno-canto bird call - https://xeno-canto.org/677525

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