Largest organisms were related to the ostrich. They exceeded in height and . The last of the elephant birds became extinct about 300 years ago. Of almost exactly the same upper proportions as the largest elephant birds was "Dromornis stirtoni" of Australia, part of a 26,000-year-old group called mihirungs of the family Dromornithidae. The largest carnivorous bird was "Brontornis", an extinct flightless bird from South America which reached a weight of and a height of about . The tallest carnivorous bird was "Kelenken", which could reach 3 to 3.2 meters in height and 220 to 250 kilograms. The tallest bird ever was
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