The essential portable guide to North American birds, for quick and easy identification in the field. The perfect book to take out on any birding expedition, whether heading deep into the woods or simply out into the backyard. Compact and easy-to-use, this stunning field guide is perfect for any bird and birding enthusiast, regardless of age or level of experience. High-quality photographs bring the bird species most seen west of the Great Plains to life on the page, capturing their beauty and making identification quick and effortless. Significant differences in plumage variation between juvenile and adult, male and female, and winter and summer are clearly pictured. Produced in collaboration with the American Museum of Natural History, Pocket Birds of North America Western Region is an essential field guide for identifying birds in North America.