Common ostrich other members of Palaeognathae and thus the flighted tinamous are the sister group to the extinct moa. It is distinctive in its appearance, with a long neck and legs, and can run for a long time at a speed of or even up to about , the fastest land speed of any bird. The common ostrich is the largest living species of bird and lays the largest eggs of any living bird (extinct elephant birds of Madagascar and the giant moa of New Zealand laid larger eggs). The common ostrich's diet consists mainly of plant matter, though it also eats
Bare-faced go-away-bird in two disjunct areas in Africa: one in Ethiopia, and the other in Burundi, DRC, Kenya, Malawi, Rwanda, Tanzania, Uganda and Zambia. It occurs in open woodland, thickets and in cultivation with scattered trees. It may be found up to 1,400 m, but at Loita up to 2,200 m in scattered cedar, acacia and evergreen scrub. Two geographically isolated races are accepted: These birds primarily eat fruits, leaf buds, and seeds. Like other Touracos, the bare-faced go-away-bird lays two to three greenish-white eggs each mating season. Nests are often built in tall acacia trees. Bare-faced go-away-bird The bare-faced go-away-bird ("Corythaixoides