Observation on the Birds of Argentina, Paraguay, Uruguay and Chile
Wetmore, Alexander
Manual de las Aves de El Salvador
Rand, A.L.; Melvin A. Traylor
Birds of La Plata (Two Volumes)
HUDSON, W.H
The Birds of British Guiana: Based on the Collection of Frederick Vavasour McConnell
Chubb, Charles
Mammals of Northern Colombia, Preliminary Report No. 8: Arboreal Rice Rats, a Systematic Revision of
Hershkovitz, Philip
Hummingbirds of Colombia
Mazariegos H., Luis A.
A Naturalist in Trinidad
Worth, C. Brooke
Descriptions of New Birds from Colombia, Ecuador, Peru, and Argentina
Chapman, Frank M.
The Birds of South America, Volume II: The Suboscine Passerines [USED]
Ridgely, Robert S.; Tudor, Guy; Brown, William L.; World Wildlife Fund
Libro Rojo de los Anfibios de Colombia
Rueda-Almonacid, Jose Vincente; John D. Lynch; Adolfo Amezquita [Editors]
Tecnicas de Inventario y Monitoreo para los Anfibios de la Region Tropical Andina
Angulo Ariadne; et al [Editors]
Aposematic Poison Frogs [Dendrobatidae] of the Andean Countries: Bolivia, Colombia, Ecuador, Peru an
Kahn, Ted R. et al [Editors]