"A Guide to the Birds of Colombia," by Steven L. Hilty and William L. Brown is mandatory reading for serious field observers. This book treats all of the 1,695 species of resident and migrant birds known to have been reliably recorded in Colombia and on its island posessions of Gorgona and Malpelo prior to 1984.
Moreover, this massive Princeton University Press text (836 pages) includes sixty-nine color and black and white plates by Guy Tudor (one of the most talented living bird illustrators in the world) & others. And before I forget this book includes superb line drawings by Michel Kleinbaum.
I found the sections on Topography, Climate, Vegetation, Habitat Descriptions, and Conservation & National Parks excellent. In addition, the review of Colombian Ornithology and the Range Maps are valuable field observer tools. In conclusion, this is a meticulous text with an expert index that will absolutely fill all the needs of serious field obsevers. Recommended.
Bert Ruiz