CASEY MCFARLAND trains biologists, research teams, ecotourism guides, and the general public to read and interpret the tracks, signs, and trails of wildlife. A Senior Tracker and Senior International Evaluator for CyberTracker Conservation, he works around the globe to develop and support wildlife tracking skill and ecological knowledge. A skilled educator and all-around outdoorsman, Casey provides Track & Sign and Trailing Evaluations—as well as a variety of backcountry expeditions and wildlife courses. He is a coauthor of the revision of Mammal Tracks and Sign: A Guide to North American Species and Bird Feathers: A Guide to North American Species. He lives in Fort Collins, Colorado.