Northern Prairie Wildlife Research Center
Fritts, S. H., and L. D. Mech. 1981. Dynamics, movements, and feeding ecology of a newly protected wolf population in northwestern Minnesota. Wildlife Monograph 80. Fuller, T. K. 1989. Population dynamics of wolves in north-central Minnesota. Wildlife Monograph 105. Mech, L. D. 1970. The Wolf: The ecology and behavior of an endangered species. Natural History Press, Doubleday Publishing Company, New York. Mech, L. D. 1986. Wolf population in the central Superior National Forest, 1967-1985. U.S. Forest Service Research Paper NC-270. Mech, L. D., and L. D. Frenzel, Jr. 1971. Ecological studies of the timber wolf in northeastern Minnesota. U.S. Forest Service Research Paper NC-52. Nudds, T. E. 1978. Convergence of group size strategies by mammalian social carnivores. American Naturalist 112:957-960. Stenlund, M. H. 1955. A field study of the timber wolf (Canis lupus) on the Superior National Forest, Minnesota. Minnesota Department of Conservation Technical Bulletin 4, St. Paul. Stewart, J. E. 1999. Anxious encounter. International Wolf 9(3):21-22. Van Ballenberghe, V., A. W. Erickson, and D. Byman. 1975. Ecology of the timber wolf in northeastern Minnesota. Wildlife Monograph 42. Wisconsin Department of Natural Resources. 1999. Wisconsin Wolf Management Plan Draft. Madison, Wisconsin.