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.
♦ ²Bird frugivory on Struthanthus concinnus (Loranthaceae) in Southeastern Brazil, Tadeu J. Guerra and Miguel Ângelo Marini, Ararajuba 10 (2): 187-192 (2002)