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]