Attributes / relations provided by
♦ ¹Kattge, J. et al. (2011b) TRY - a global database of plant traits Global Change Biology 17:2905-2935
♦ 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
♦ ³Seed 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
♦ ⁴Ben-Dov, Y., Miller, D.R. & Gibson, G.A.P. ScaleNet 4 November 2009
♦ ⁵Seasonal Variation in the Feeding Ecology of the Grey-cheeked Mangabey (Lophocebus albigena) in Cameroon, JOHN R. POULSEN, CONNIE J. CLARK, AND THOMAS B. SMITH, American Journal of Primatology 54:91–105 (2001)
♦ ⁶Feeding Ecology of Mandrills (Mandrillus sphinx) in Campo Animal Reserve, Cameroon, JIRO HOSHINO, PRIMATES, 26(3): 248-273, July 1985