A timely companion to National Geographic's best-selling Field Guide to the Birds of North America, this sumptuous, fact-filled and easy-to-use reference atlas is an invaluable tool for experienced and novice birders alike. With lively and astute essays from leading ornithologists, conservationists and other prominent experts. This definitive volume provides vital statistics, specialised sidebars, charts, and full-spread maps dedicated to species comparisons, locations, behaviours and endangered statuses.