The essential nature guide to Yellowstone and Grand Teton National Parks, written by a local wildlife biologist and eco-tour guide. More than 1200 colour photographs with concise descriptions reveal the richness of the Greater Yellowstone Ecosystem. This is the definitive field identification guide to the region's rocks, minerals, geysers, waterfalls, mushrooms, trees. wildflowers, insects, amphibians, reptiles, fish, birds, mammals, tracks and scat, and the night sky. Includes 75 natural features with locator maps and 650 species. Don't leave home without A Farcountry Field Guide to Yellowstone and Grand Teton National Parks on your dashboard or in your backpack.