Unique features set these guides apart from the competition and promise to win a new generation of readers: A full-color visual index, printed on the inside covers, makes the content accessible visually --a real boon to beginning and intermediate birders. Annotated artwork highlights birds' key physical features, making identification easier. Thumb-tabs help readers find information fast. Durable covers stand up to outdoor use, with integrated quick-reference flaps that double as place-markers.Field Guide to the Birds of Eastern North America details 619 species and contains 560 new range maps, plus illustrated accounts for 85 casual and accidental birds and an appendix listing 70 rarities.