American Ornithologists' Union. 1998.
Check-list of North American birds: 7th edition
American Ornithologists' Union. Allen Press, Lawrence, Kansas. 829 pgs.
(ISBN 1-891276-00-X)

Azpiroz, Adrián B. 1997.
Aves del Uruguay: Lista, estatus y distribución
Probides. Rocha, Uruguay. 52 pgs. (ISBN: 9974-7532-2-8) (Spanish)

Beaman, Mark and Steve Madge. 1998.
The Handbook of Bird Identification for Europe and the Western Palearctic
Princeton University Press. Princeton, New Jersey. 868 pgs.
(ISBN 0-691-02726-9, LC: QL690.A1B385 1998)

Clements, James F. 2000.
Birds of the World: A Checklist: Fifth Edition.
Ibis Publishing Company. Vista, California. 867 pgs.
(ISBN: 0-934797-16-1)

De Schauensee, Rodolphe Meyer and William H. Phelps, Jr. 1978.
A guide to the Birds of Venezuela
Princeton University Press. Princeton, New Jersey. 424 pgs.
(ISBN: 0-691-08205-7, LC: QL689.V4D47)

Hancock, James and James Kushlan. 1984.
The herons handbook
Harper & Row, Publishers, Inc. New York, New York. 288 pgs.
(ISBN 0-06-015331-8)

Hilty, Steven L. and William L. Brown. 1986.
A guide to the Birds of Colombia
Princeton University Press. Princeton. New Jersey. 836 pgs.
(ISBN: 0-691-08371-1 and 0-691-08372-X)

Howard, Richard and Alick Moore. 1991.
A complete checklist of the birds of the world. Second Edition.
Academic Press. San Diego, California. pgs 13-15.
(ISBN 0-12-356910-9)

Howell, Steve N. G. and Sophie Webb. 1995.
A guide to the birds of Mexico and Northern Central America
Oxford University Press. Oxford, New York, Tokyo. 851 pgs.
(ISBN: 0 19 854013 2 and 0 19 854012 4)

Martínez, Carlos. 2004.
Food and Niche Overlap of the Scarlet Ibis and the Yellow-crowned Night Heron in a Tropical Mangrove Swamp
Waterbirds. Vol 27. No 1. pgs 1-8.

Olmos, Fábio, Robson Silva e Silva, and Adriadne Prado. 2001.
Breeding Season Diet of Scarlet Ibises and Little Blue Herons in a Brazilian Mangrove Swamp
Waterbirds. Vol 24. No 1. Pgs 50-57.

Olrog, Claës Chr. 1968.
Las Aves Sudamericanas: Una guía de campo
Tomo Primero (Pingüinos-Pájaros Carpinteros)
Universidad Nacional de Tucumán. Fundación - Instituto "Miguel Lillo". Argentina. 505 pgs. (Spanish)

Peterson, Roger Tory and Edward L. Chalif. 1998.
Aves de México: Guía de Campo: Identificación de todas las especies encontradas en México, Guatemala, Belice y El Salvador
Editorial Diana. México, D.F., México. 3a Impresión. 473 pgs
(ISBN: 968-13-1282-1) (Spanish)

Sick, Helmut. 1993.
Birds in Brazil
Translated from Portuguese to English by William Belton
Princeton University Press. Princeton, New Jersey. 703 pgs
(ISBN: 0-691-08569-2)

Stiles, Gary F. and Alexander F. Skutch. 1989.
A Guide to the Birds of Costa Rica
Comstock Publishing Associates. Ithaca, New York. 511 pgs.
(ISBN: 0-8014-2287-6 and 0-8014-9600-4)

Stockton de Dod, Annabelle. 1981.
Guía de Campo para las Aves de la República Dominicana
Editora Horizontes de América, Santo Domingo, República Dominicana. Pg 27. (Spanish)

Stotz, Douglas F., John W. Fitzpatrick, Theodore A. Parker III and Debra K. Moskovits. 1996.
Neotropical Birds: Ecology and Conservation
The University of Chicago Press. Chicago and London. 478 pgs.
(ISBN: 0-226-77629-8 and 0-226-77630-1, LC: QL685.7.N46 1996)