National Audubon Society Field Guide to North American Birds : Western Region (National Audubon Society Field Guide)

This leading and most complete all-photographic field guide to birds describes 544 species found in the western regions of North America. It features 676 full-color, high-quality nature photographs and a detailed range map for each species covered. The first bird guide to be organized visually, this book groups species photographs by color and shape to make identification simple and accurate in the field.