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.
♦ ²Guild of Frugivores on three fruit-producing tree species Polyscias fulva, Syzyguim guineensis subsp. bamensdae and Pouteria altissima) in Ngel Nyaki Forest Reserve, a Montane Forest Ecosystem in Nigeria, Ihuma Jerome, Hazel Chapman, Tella Iyiola, Akosim Calistus, Stephen Goldson, Journal of Research in Forestry, Wildlife and Environment, Vol. 3, No. 2 (2011)