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
A field guide to North American birds presents an identification method that uses panoramic illustrations, range maps, and an organization system based on habit
The first comprehensive identification guide dealing exclusively with the birds of this region. It covers all the species, including vagrants, found in Ecuador,