Covering 508 bird species found east of the Rocky Mountains, the revised second edition takes into account changes in taxonomy and uses improved photography. At the heart of the guide is a set of 646 well-made color photographs whose subjects are organized by easily discerned characteristics (e.g., "chicken-like marsh birds," such as the clapper rail; "gull-like birds," such as the kittiwake; and "upright-perching water birds," such as the common murre). The photographs are then keyed to textual descriptions of the birds' appearance, range and habitat, nesting characteristics, and behavior. Easy to use and handsomely produced, this belongs in every eastern birdwatcher's collection. --Gregory McNamee
From the Inside Flap
Introduced in 1977 and completely revised in 1994, these bestselling photographic field guides have become the birding bibles of more than four million enthusiasts. Virtually every bird found in North America is brought to life in a full-color photograph and 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.
Note: the Eastern Edition generally covers states east of the Rocky Mountains, while the Western Edition covers the Rocky Mountain range and all the states to the west of it.