In this groundbreaking and meticulously field-tested guide, the rich variety of Sierra life-trees, wildflowers, ferns, fungi, lichens, fish, reptiles, amphibians, birds, mammals, and insects-comes alive. Both written and illustrated by John Muir Laws, THE LAWS FIELD GUIDE TO THE SIERRA NEVADA includes more than 1,700 species, descriptions of behavior, adaptations, and interactions between species, and species and topics not found in most guides, including aquatic life, spiders and webs, plankton, plant galls, bark beetle galleries, animal tracks and evidence, seasonal star charts, weather patterns, and cloud formations.