Attributes / relations provided by
♦ ¹Food Plants Eaten by Amazonian Manatees (Trichechus inunguis, Mammalia : Sirenia), Ioni G. Colares and Elton P. Colares, Brazilian Archives of Biology and Technology, Vol. 45, N. 1 : pp. 67 - 72, March, 2002
♦ 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.