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Ceratogymna
	Black-casqued hornbill (Ceratogymna atrata)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Bucerotiformes
Family:	Bucerotidae
Genus:	Ceratogymna; Bonaparte, 1854
Type species
	Buceros elatus; Temminck, 1831
Species
	2, see text.

Ceratogymna is a genus of large, primarily frugivorous hornbills (family Bucerotidae) found in the humid forests of Central and West Africa. They are sexually dimorphic: males are all black, while females have brown heads and a smaller casque.^[2] Unlike the members of the genus Bycanistes, the two species in the genus Ceratogymna have extensive, primarily blue, bare facial skin and dewlap, and the only white in their plumage is in the tail (although the yellow-casqued wattled hornbill has slight whitish speckling on the neck).

Species

Genus **Ceratogymna** – Bonaparte, 1854 – two species
Common name	Scientific name and subspecies	Range	Size and ecology	IUCN status and estimated population
Black-casqued hornbill	Ceratogymna atrata Temminck, 1835	Angola, Cameroon, Central African Republic, Republic of the Congo, Democratic Republic of the Congo, Ivory Coast, Equatorial Guinea, Gabon, Ghana, Guinea, Liberia, Nigeria, Sierra Leone, South Sudan, Togo, and Uganda.	Size: Habitat: Diet:	LC
Yellow-casqued hornbill	Ceratogymna elata (Temminck, 1831)	West Africa	Size: Habitat: Diet:	VU

The members of the genus Bycanistes have been included in this genus, but today most authorities consider the two separate.^[2]

References

^ "Bucerotidae". aviansystematics.org. The Trust for Avian Systematics. Retrieved 2023-07-26.
^ ^a ^b Kemp, A. C. (2001). Family Bucerotidae (Hornbills). Pp. 436-523 in: del Hoyo, J., Elliott, A., & Sargatal, J. eds. (2001). Handbook of the Birds of the World. Vol. 6. Mousebirds to Hornbills. Lynx Edicions, Barcelona. ISBN 84-87334-30-X