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♦ ¹DIET OF THE CAUCA GUAN: EXPLOITATION OF A NOVEL FOOD SOURCE IN TIMES OF SCARCITY, MARCIA C. MUÑOZ, GUSTAVO A. LONDOÑO, MARGARITA M. RIOS, and GUSTAVO H. KATTAN, The Condor 109:841–851 (2007)
♦ 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.