For every resident of and visitor to the Rocky Mountain states, this unique compact yet comprehensive volume is the essential guide to the Rocky Mountain region's natural world. Whether you're at home or on the road, the National Audubon Society Field Guide to the Rocky Mountain States tells you: what you'll see in the heavens on crystalline Rocky Mountain nights; the wildflowers that flourish in different Rocky Mountain habitats; the birds you'll encounter in the mountains, on the plains, and everywhere in between; the region's best natural sites-how to reach them, when to visit, and what you'll see. Here, too, is complete information on the geology, fossils, wildlife habitats, weather, and ecology of the Rocky Mountain states, as well as the region's trees, mushrooms, mammals, insects, reptiles, fishes, and other life-forms-all beautifully illustrated in 1,500 photographs, drawings, and maps.