Aerial radio-tracking and observation showed total number of wolves per year in 2,060-km2 area varied from 35 to 87 in winter and from 30 to 78 in spring and generally declined because of a decreasing deer herd. Since winter 1977-1978, the population has remained relatively stable because an increasing proportion of it has switched to preying on moose. The number of wolves preying on deer has continued to decline.
|Title||Wolf population in the Central Superior National Forest, 1967-1985|
|Authors||L. D. Mech|
|Publication Subtype||Federal Government Series|
|Series Title||Research Paper|
|Record Source||USGS Publications Warehouse|
|USGS Organization||Patuxent Wildlife Research Center|