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Black-and-white-casqued Hornbill - BirdForum Opus

(Redirected from Bycanistes subcylindricus)

Alternative name: Grey-cheeked Hornbill

Photo © by MURAMURA
Mpanga Forest, Mpigi, Central Uganda, November 2006
Bycanistes subcylindricus

Ceratogymna subcylindrica


60–70 cm (23½-27½ in)

  • Black overall plumage
  • White rump, tail-coverts and underparts

A large black-and-white hornbill.

Similar Species

Similar to the Brown-cheeked Hornbill and White-thighed Hornbill, but the central tail feathers are black to the tip.


Tropical Africa; disjunct from Ivory Coast to Uganda and northern Angola.

Male and Female
Photo © by Volker Sthamer
Entebbe, Uganda, February-2019


Sometimes included in genus Ceratogymna.


Bycanistes subcylindricus has two subspecies[1]:

  • B. s. subcylindricus:
  • B. s. subquadratus:


Forest edge, gallery forest and tall trees in secondary growth, evergreen forests and savanna.



They nest in tree cavities. Two eggs are laid. These birds are long-lived and form life-long partnerships. Females need to know that they can fully rely on their partner as during breeding the female is "bricked -up" into a tree-hole using dried mud/fruit puree/droppings. Here she lays and incubates whilst her partner brings her and her youngster all of their food. When the single youngster is large enough the female breaks out and both adults continue to feed the youngster.


The diet consists of a wide variety of fruit, particularly figs; they also take small animals and insects, including snails and millipedes.


  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2015. The eBird/Clements checklist of birds of the world: v2015, with updates to August 2015. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
  2. Avibase
  3. Sinclair I & Ryan P. 2003. Birds of Africa south of the Sahara. Princeton University Press. ISBN 0620207299
  4. Handbook of the Birds of the World Alive (retrieved February 2016)
  5. BF Member observations

Recommended Citation

External Links

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