Sibley Field Guide to Birds of Eastern North America. Sibley Field Guide is a new portable bird field guide from David Sibley that every bird watcher will want to carry into the field. Bird watching is made easy with this compact and comprehensive field guide that features 650 bird species plus regional populations found east of the Rocky Mountains.

Accounts include stunningly accurate illustrations with more than 4,200 in total, and descriptive caption text pointing out the most important field marks. Bird watching comes alive when each entry contains new text concerning frequency, nesting, behavior, food and feeding, voice description, and key identification features. Every bird watcher will want to carry this field guide for maximium bird watching enjoyment.