Apodiformes
From Free net encyclopedia
{{Taxobox
| color = pink
| name = Apodiformes
| image = Rubythroathummer65.jpg
| image_width = 200px
| image_caption = Ruby-throated Hummingbird
| regnum = Animalia
| phylum = Chordata
| classis = Aves
| ordo = Apodiformes
| ordo_authority = Peters, 1940
| subdivision_ranks = Families
| subdivision =
Apodidae
Hemiprocnidae
}}
Traditionally, the bird order Apodiformes contained three families: the swifts, Apodidae, the tree swifts, Hemiprocnidae, and the hummingbirds, Trochilidae.
In the Sibley-Ahlquist taxonomy, hummingbirds are separated from the Apodiformes as a new order Trochiliformes.
However the hummingbirds, swifts and crested swifts do all share anatomical similarities to one another, and their closest known living relatives, are probably the owlet-nightjars.
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