Introduced in 1977, The Audubon Society Field Guide to North American Birds has become the birding bibles of more than four million enthusiasts. Almost all birds found in North America are brought to life in  full-color photographs with textual information on the bird's voice, nesting habits, habitat, range and interesting behaviors.

Accompanying range maps; overhead flight silhouettes; sections on bird-watching, accidental species, and endangered birds make these the most comprehensive field guides to birds available.

This book is in very good shape; clearly it's time for it to be taken out in the field!