Attributes / relations provided by
♦ ¹del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
♦ ²The diet of chimpanzees in the Budongo Forest Reserve, Uganda, NICHOLAS E. NEWTON-FISHER, Afr. J. Ecol. 1999, Volume 37, pages 344–354
♦ ³Implications of Small Scale Variation in Ecological Conditions for the Diet of Red Colobus Monkeys; Colin A. Chapman, Lauren J. Chapman; Primates, 40(1): 215-231, January 1999
♦ ⁴Ben-Dov, Y., Miller, D.R. & Gibson, G.A.P. ScaleNet 4 November 2009