Diet Overlap

Bycanistes fistulator (Piping Hornbill)
Bycanistes cylindricus (Brown-cheeked Hornbill)

Common Diet

Annickia affinis
Cleistopholis glauca
Cleistopholis patens
Coelocaryon preussii
Discoglypremna caloneura
Eribroma oblongum
Greenwayodendron suaveolens
Heisteria zimmereri
Lannea welwitschii
Leplaea cedrata (Light Bossé)
Leplaea thompsonii (Black Guarea)
Maesopsis eminii (umbrella-tree)
Musanga cecropioides (Musanga cecropioides)
Pycnanthus angolensis angolensis
Rauwolfia macrophylla
Staudtia kamerunensis
Xylopia hypolampra
Xylopia rubescens

Common Habitat

Africa
Bamingui-Bangoran Conservation Area
Eastern Guinean forests
Guinean Forests of West Africa
Kenting National Park
Marahoue National Park
Mont Nimba Strict Nature Reserve
Mont Peko National Park
Nouabalï-Ndoki National Park
Omo Strict Natural Reserve
Parc National de Tai
Reserve de Moukalaba-Dougoua (Gamba Complex)
Sapo National Park
Western Guinean lowland forests

Attributes / relations provided by
♦ 1Seed dispersal by Ceratogymna hornbills in the Dja Reserve, Cameroon, KENNETH D. WHITNEY, MARK K. FOGIEL, AARON M. LAMPERTI, KIMBERLY M. HOLBROOK, DONALD J. STAUFFER, BRITTA DENISE HARDESTY, V. THOMAS PARKER and THOMAS B. SMITH, Journal of Tropical Ecology (1998) 14:351–371
♦ 2Breeding and nest site characteristics of the Black-casqued Hornbill Ceratogymna atrata and White-thighed Hornbill Ceratogymna cylindricus in south-central Cameroon, Donald J Stauffer and Thomas B Smith, Ostrich 2004, 75(3): 79–88