Attributes / relations provided by
♦ ¹Trophic structure and flows of energy in the Huizache–Caimanero lagoon complex on the Pacific coast of Mexico; Manuel J. Zetina-Rejón, Francisco Arreguı́n-Sánchez, Ernesto A. Chávez; Estuarine, Coastal and Shelf Science 57 (2003) 803–815
♦ 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.