Diet Overlap

Ceratogymna atrata (Black-casqued Wattled Hornbill)
Bycanistes fistulator (Piping Hornbill)

Common Diet

Annickia affinis
Cleistopholis glauca
Cleistopholis patens
Coelocaryon preussii
Discoglypremna caloneura
Elaeis guineensis (African oil palm)
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
Atlantic Equatorial coastal forests
Cameroonian Highlands forests
Central Congolian lowland forests
Cross-Niger transition forests
Cross-Sanaga-Bioko coastal forests
Eastern Afromontane
Eastern Congolian swamp forests
Eastern Guinean forests
Guinean Forests of West Africa
Kahuzi-Biéga National Park
Kambui Hills Forest Reserve
Kenting National Park
Korup National Park
Marahoue National Park
Mont Nimba Strict Nature Reserve
Mont Peko National Park
Mount Cameroon and Bioko montane forests
Niger Delta swamp forests
Nigerian lowland forests
Northeastern Congolian lowland forests
Northern Congolian forest-savanna mosaic
Northwestern Congolian lowland forests
Nouabalï-Ndoki National Park
Omo Strict Natural Reserve
Parc National de la Lopé
Parc National de Tai
Reserve de Moukalaba-Dougoua (Gamba Complex)
Reserve des Monts Doudou (Gamba Complex)
Sapo National Park
Southern Congolian forest-savanna mosaic
Takamanda Forest Reserve
Western Congolian forest-savanna mosaic
Western Guinean lowland forests

Attributes / relations provided by
♦ 1Breeding 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
♦ 2Seed 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