Each guide contains 447 pages. A regional approach sets these guides apart from other popular field guides available. Complete information on the birds, animals, trees, wildflowers, mushrooms, insects, weather, night skies, geology, fossils, wildlife habitats, parks, and preserves of each region is presented in a single, easy-to-carry, easy-to-use volume. Approximately 1,500 superior full-color photographs and illustrations in each volume make identification easy and sure. Everyone who lives in or plans to visit a particular region will find these guides invaluable. Flexicovers.