Hummingbird
Hummingbirds have traditionally been a part of the bird order Apodiformes. This order includes the hummingbirds, the swifts and the tree swifts. The Sibley-Ahlquist taxonomy of birds, based on DNA studies done in the 1970s and 1980s, changed the classification of hummingbirds. Instead of being in the same order as the swifts, the hummingbirds were made an order, the Trochiliformes. Their previous order, Apodiformes was changed to the superorder Apodimorphae. This superorder contains the three families of birds which were in it when it was an order.