Birds of Mexico and Northern Central America, Steve N. G. Howell and Sophie
published in the United States by Oxford University Press Inc. New York.
published in the United States by Oxford University Press Inc. New York. 1995.
Birds of Tikal, An Annotated Checklist for the Tikal National Park and Peten
Patterson Field Guide to the Birds of Mexico, Roger Tory Paterson and Edward L. Chalif, Houghton Mifflin Company, Boston. 1973
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