The Sibley Guide to Birds has quickly become the new standard of excellence in bird identification guides, covering more than 810 North American birds in amazing detail. Now comes a new portable guide from David Sibley that every birder will want to carry into the field. Compact and comprehensive, this new guide features 650 bird species plus regional populations found east of the Rocky Mountains. Also avaialble is a Western edition. Accounts include stunningly accurate illustrations--more than 4,200 in total--with descriptive caption text pointing out the most important field marks. Each entry contains new text concerning frequency, nesting, behavior, food and feeding, voice description, and key identification features. Accounts also include brand-new maps created from information contributed by 110 regional experts across the continent.

The Sibley Field Guides to Birds of Eastern and Western North America are indispensable resources for all birders seeking an authoritative and portable guide to the birds of the United States.