Category:Apodiformes

Traditionally, the bird order Apodiformes has three families: the swifts (Apodidae), the tree swifts, (Hemiprocnidae), and the hummingbirds, (Trochilidae). New research shows that the owlet-nightjars seem also to belong in this order.

In the Sibley-Ahlquist taxonomy, hummingbirds are separated from the Apodiformes as a new order Trochiliformes.

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