The most comprehensive field guide available to the flora and fauna of California--a portable, essential companion for visitors and residents alike--from the go-to reference source for over 18 million nature lovers. This compact volume contains: An easy-to-use field guide for identifying 1,000 of the state's wildflowers, trees, mushrooms, mosses, fishes, amphibians, reptiles, birds, butterflies, mammals, and much more; A complete overview of California's natural history, covering geology, wildlife habitats, ecology, fossils, rocks and minerals, clouds and weather patterns and night sky; An extensive sampling of the area's best parks, preserves, beaches, forests, islands, and wildlife sanctuaries, with detailed descriptions and visitor information for 50 sites and notes on dozens of others. The guide is packed with visual information -- the 1,500 full-color images include more than 1,300 photographs, 14 maps, and 16 night-sky charts, as well as 150 drawings explaining everything from geological processes to the basic features of different plants and animals.