Order: Buceratiformes (hornbills, ground-hornbills)

Life > Eukaryotes > Opisthokonta > Metazoa (animals) > Bilateria > Deuterostomia > Chordata > Craniata > Vertebrata (vertebrates)  > Gnathostomata (jawed vertebrates) > Teleostomi (teleost fish) > Osteichthyes (bony fish) > Class: Sarcopterygii (lobe-finned fish) > Stegocephalia (terrestrial vertebrates) > Tetrapoda (four-legged vertebrates) > Reptiliomorpha > Amniota > Reptilia (reptiles) > Romeriida > Diapsida > Archosauromorpha > Archosauria > Dinosauria (dinosaurs) > Saurischia > Theropoda (bipedal predatory dinosaurs) > Coelurosauria > Maniraptora > Aves (birds) 

Familes encountered in southern Africa

Family: Bucerotidae (hornbills)
Family: Bucorvidae (ground-hornbills) Bucorvus is the sole genus in this family and it contains two species: Northern (Abyssinian) ground hornbill Bocorvus abyssinicus (distribution: extending from Senegal in West Africa through the Sahel region to Ethiopia in the east); and Southern ground-hornbill Bucorvus leadbeateri (southern and east Africa).