The Sibley Field Guide To Birds of Western North America Book

Compact and comprehensive, this guide features 715 bird species, plus regional populations, found west of the Rocky Mountains. Entries include stunningly accurate illustrations--more than 5,046 in total--with descriptive captions pointing out the most important field marks. Each entry has been updated to include the most current information concerning frequency, nesting, behavior, food and feeding, voice description, and key identification features. Here too are more than 652 updated maps drawn from information contributed by 110 regional experts across the continent, and showing winter, summer, year-round, migration, and rare ranges.

This new and improved edition includes:

• Updated habitat, description, behavior, and conservation text for each species account and all family pages.
• New and revised illustrations of species and regional forms.