Steven L. HiltyBooksGo, Spud, Go!Birds of ColombiaDirt, Sweat, and DieselA guide to the birds of ColombiaDirt, sweat, and dieselEnvironmental profile on GuyanaBirds of Venezuela (Helm Field Guides)Birds of VenezuelaDraft environmental profile of the Kingdom of LesothoBirds of VenezuelaBirds of tropical AmericaAuthor data: Open Library
