Mirandornithes

Mirandornithes (name coined by Sangster (2005) ) is a clade that consists of flamingos and grebes.

Taxonomy
Determining the relationships of both groups has been problematic. Flamingos had been placed with numerous branches within Neognathae, such as ducks and storks. The grebes had been placed with the loons. However recent studies seem to confirm these two branches as sister groups.

Both primitive Phoenicopteriformes and their closest relatives, the grebes, were highly aquatic. This indicates that the entire mirandornithe group evolved from aquatic, probably swimming ancestors.

Distribution
Flamingos are found in southern US, Mexico, Caribbean, northern South America, southern South America, southern Europe, Africa, and Asia. Flamingos became extinct in Australia.

Grebes are cosmopolitan, except Antarctica (see external links below).