Summary ²

The common swift (Apus apus) is a medium-sized bird, superficially similar to the barn swallow or house martin but somewhat larger, though not stemming from those passerine species, being in the order Apodiformes. The resemblances between the groups are due to convergent evolution, reflecting similar contextual development. The swifts' nearest relatives are thought to be the New World hummingbirds and the Southeast Asian treeswifts.

Sources and Credits

1. (c) Алексей Эбель, some rights reserved (CC BY-NC), uploaded by Алексей Эбель
2. (c) Wikipedia, some rights reserved (CC BY-SA), https://en.wikipedia.org/wiki/Apus_apus

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