Amazon.com (ISBN 0679428526, Turtleback)

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