National Audubon Society Field Guide to North American Birds--WBy: National Audubon Society Series: National Audubon Society Field Guides Virtually every bird found in western North America is brought to life in this portable guide, an essential companion in the field and a staple in any birdwatcher's librarya birding bible for more than four million enthusiasts! This bestselling field guide features a durable vinyl binding and brilliant full color photographic identification pictures arranged for quick access