Attributes / relations provided by
♦ ¹Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014). Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
♦ ²del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
♦ ³The Feeding Ecology of Tanagers and Honeycreepers in Trinidad, Barbara K. Snow and D. W. Snow, The Auk Vol. 88, No. 2 (Apr., 1971), pp. 291-322