Ratites are a polyphyletic group consisting of all birds within the infraclass Palaeognathae that lack keels and cannot fly. They are mostly large, long-necked, and long-legged, the exception being th

Palaeognathae is an infraclass of birds, called paleognaths or palaeognaths, It is one of the two infraclasses of birds, the other being Neognathae, both of which form Neornithes. Palaeognathae contai