Sibley Guides to Birds of North America

This indispensable resource is a must for all birders!

Compact and comprehensive, each Guide features hundreds of bird species and thousands of illustrations. Each entry contains new text concerning frequency, nesting, behavior, food and feeding, voice description and key identification features.
No. 133679 features 650 bird species plus regional populations found east of the Rocky Mountains with more than 4200 illustrations and descriptive text pointing out the most important field marks. 431 pages.
No. 133680 features 703 bird species plus regional populations found west of the Rocky Mountains with more than 4600 illustrations and descriptive text pointing out the most important field marks. 471 pages.Publication: Written and illustrated by David Allen Sibley. Softcover. 2003.