David Moskowitz, a professional wildlife tracker, photographer, and outdoor educator, has contributed to wildlife studies in the Pacific Northwest and in the Canadian and U.S. Rocky Mountains. He has tracked, documented, and photographed wolves in the wild in Oregon, Washington, Idaho, Montana, British Columbia, and southern Alberta, studying den and rendezvous sites and assisting with efforts to detect the species in parts of the region where their current status is unknown. He helped establish and co-manages the Cascades Citizen Wildlife Monitoring Project, teaches wildlife tracking programs internationally, and has led wolf-tracking expeditions in Washington, Idaho, and Wisconsin. As an evaluator for Cybertracker Conservation, he provides certification of wildlife tracking skills as part of efforts to increase observer reliability and the use of tracking in research and conservation initiatives across North America. An avid mountaineer and an instructor and trainer for Outward Bound, he has explored many of the most remote parts of the Pacific Northwest. He is also the author of the Timber Press field guide Wildlife in the Pacific Northwest: Tracking and Identifying Mammals, Birds, Reptiles, Amphibians, and Invertebrates.