Born in rural New Mexico, Casey spent his youth roaming the desert hills east of Albuquerque. He currently works in wildlife connectivity research, providing consultation, training and field methodology design to help researchers and monitoring teams assess and improve fragmented landscapes for wildlife permeability. He also contributes to various carnivore projects as a field technician. He trains and certifies biologists, research teams and the general public across the country through the CyberTracker Conservation evaluation system, an international standard for gauging and enhancing one's in-field knowledge of track, sign and behavior of mammals, birds, reptiles, amphibians and invertebrates.
Casey also has been involved in general environmental education for a decade, instructing in venues ranging from wilderness schools and state agencies to the Sierra Club.
He is co-author of just-released Bird Feathers: A Guide to North American Species
-Casey with a pine marten on Kuiu Island, SE Alaska.