Dr. Mech, formerly with the Department of Biology,
Macalester College, St. Paul, Minnesota, is now employed by
the U.S. Bureau of Sport Fisheries and Wildlife, Twin
Cities, Minnesota.
Dr. Frenzel, formerly with the Department of Biology,
Macalester College, St. Paul, Minnesota, is now employed by
the Department of Entomology, Fisheries, and Wildlife,
University of Minnesota, St. Paul, Minnesota.
Dr. Ream, formerly with the North Central Forest Experiment
Station (maintained in cooperation with the University of
Minnesota), Forest Service, U.S. Department of Agriculture,
is now employed by the School of Forestry, University of
Montana, Missoula, Montana.
Mr. Winship is with the U.S. Bureau of Sport Fisheries and
Wildlife, Twin Cities, Minnesota.
Mr. Karns is with the Minnesota Department of Conservation,
Forest Lake, Minnesota.
For sale by the Superintendent of Documents, U.S. Government Printing
Office, Washington, D.C. 20402
MOVEMENTS, BEHAVIOR, AND ECOLOGY OF TIMBER WOLVES
IN NORTHEASTERN MINNESOTA
L. David Mech, L. D. Frenzel, Jr.,
Robert R. Ream, and John W. Winship
The largest population of wolves (_Canis lupus_) remaining today in the
continental United States outside of Alaska is in northern Minnesota.
As of mid-1970 this population was not legally protected, and the
species, which once ranged over almost all of North America, is now
considered by the U.S. Department of the Interior to be in danger of
extinction in the contiguous 48 States. Until the present research, the
only field studies of Minnesota wolves were those of Olson (1938 a, b)
and Stenlund (1955). Those investigations provided much useful general
information about Minnesota wolves and gave the present authors an
excellent background with which to begin more detailed investigations.
This paper reports on the basic aspects of a series of studies that
began in 1964, and concentrates primarily on wolf movements and
activity, social behavior, hunting behavior, and population
organization. Most of the data were collected during January, February,
and March 1967; February, November, and December 1968; and January
through August 1969. A total of 192 days was spent in the field.
According to a distribution map of wolf subspecies (Goldman 1944), the
race of wolves in our study area is _Canis lupus lycaon_. However,
evidence presented by Mech and Frenzel (see page 60) suggests that
there may be strong influence by _C. l. nubilus_, a more western race
of wolf formerly thought to be extinct (Goldman 1944).
Between 1965 and the present, wolves in the study area were neither
protected nor bountied, and the influence of trapping and hunting is
thought to have been negligible.