Attributes / relations provided by
♦ ¹Conserving Cracids: The most Threatened Family of Birds in the Americas, Edited by Daniel M. Brooks, Miscellaneous Publications of The Houston Museum of Natural Science, Number 6 (2006)
♦ 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.