The landscape of the Sonoran Desert Region varies dramatically from parched desert lowlands to semiarid tropical forests and frigid subalpine meadows. Covering southeasternmost California, much of southern and central Arizona, most of Baja California, and much of the state of Sonora, Mexico, it is home to an extraordinary variety of plants and animals. A Natural History of the Sonoran Desert takes readers deep into its vast expanse, looking closely at the relationships of plants and animals with the land and people, through time and across landscapes. In accessible language, more than forty scientists and/or naturalists examine the region's biodiversity, geology, weather, plants, and animals (from invertebrates to fish, amphibians, reptiles, birds, and mammals), as well as potential threats to the species and habitats. The text is supplemented throughout with anecdotes, essays, photographs, maps, diagrams, and 450 finely rendered drawings. This new edition adds chapters on the Sky Islands, Sea of Cortez, desert pollinators, and conservation issues. Taxonomic nomenclature has been updated and new color plates and figures have been added. This comprehensive natural history, like the original edition, will surely become an invaluable companion for nature enthusiasts, birdwatchers, hikers, students, naturalists, and anyone interested in the desert Southwest. Published in association with the Arizona-Sonora Desert Museum.