RESULTS 8 Social Structure of the Translocated Wolves 8 Aerial Tracking 10 Movements of the Translocated Wolves 11 Post-Release Phase 11 Directional Movement Phase 11 Exploratory Phase 11 Settled Phase 11 Movements of the Remaining Pack Member 11 Movements of Wolf No. 10 12 Feeding Habits 16 Citizen Sightings 17 Habitat Use 19 Failure of Female No. 11 to Whelp 19 Demise of the Translocated Wolves 19 DISCUSSION 21 Effect of Captivity and Human Contact 21 Movements 22 Environmental Influences 22 Possible Homing Tendencies 22 Distances Traveled 23 Home Range Size 25 Selection of a Territory 25 Vulnerability and Mortality 25 Food Habits and Predation 26 An Alternate Approach 26 CONCLUSIONS 26 ACKNOWLEDGMENTS 27 LITERATURE CITED 27 ABSTRACT Two male and two female eastern timber wolves (_Canis lupus lycaon_), live-trapped in Minnesota were released in March 1974 near Huron Mountain in the Upper Peninsula of Michigan. Their movements were monitored by aerial radio-telemetry. The wolves separated into a group of three and a single animal after release. The single, a young female, remained in the release region in an area of 346 square miles (896 km²). The pack of three moved generally westward for 13 days and then explored a 1,631 square-mile (4,224 km²) region but settled after 2 months in a 246 square-mile (637 km²) area about 55 miles (88 km) southwest of the release site. The adult female, which mated while captive prior to release, failed to whelp.