Ten porcupines were observed within the park over a period of two weeks. Generalizations and correlations were difficult to make since behavior varied greatly among individuals. Damage to trees in the area was noted. There was no visible evidence of harm done by porcupines to red pines which has been a problem in the late 1960's.
Report was written for a St. Olaf Winter Ecology class held at the University of Minnesota's Itasca Biological Station during January 1976. The instructor was Dr. Eugene Bakko.
Kelly, Julia A.; Nelson, Kris; Nelson, Sue.
Winter study of ten porcupines in Itasca State Park.
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