Key points are not available for this paper at this time.
Michael E. Jacoby, Grant V. Hilderbrand, Christopher Servheen, Charles C. Schwartz, Stephen M. Arthur, Thomas A. Hanley, Charles T. Robbins, Robert Michener, Trophic Relations of Brown and Black Bears in Several Western North American Ecosystems, The Journal of Wildlife Management, Vol. 63, No. 3 (Jul., 1999), pp. 921-929
Jacoby et al. (Thu,) studied this question.