This is the first comprehensive field guide dealing exclusively with the birds of this region. It covers all the species, including vagrants, found in Ecuador,

Volume II of a comprehensive field guide dealing exclusively with the birds of Northern South America. It covers all the species, including vagrants, found in E

The first comprehensive identification guide dealing exclusively with the birds of this region. It covers all the species, including vagrants, found in Ecuador,

A field guide to North American birds presents an identification method that uses panoramic illustrations, range maps, and an organization system based on habit