The rare treasure of a desert river rises in Sonora, Mexico to flow into the state of Arizona. Known as the San Pedro, its story is phenomenal. The river and its watershed have become a Mecca for birdwatchers from all over the globe. The forests lining the river's banks and the mountains that flank its valleys are home to an astounding array of unique plants and animals. Within these pages, the land and its life are unveiled in a very uncommon way-through the eyes of an acclaimed naturalist whose knowledge has come directly from thousands of miles of walking in the American West and a lifelong study of the natural world. "The Life of the San Pedro" reveals an incredible landscape, a part of North America that is beyond comparison.