Reference citation: GUNTHER, K.A., M.J. BIEL, N. ANDERSON, AND L. WAITS. 2002. Probable grizzly bear predation on an American black bear in Yellowstone National Park. Ursus 13:372-374.
Source citation: Gunther KA et al. 2014 Dietary breadth of grizzly bears in the Greater Yellowstone Ecosystem. Ursus 25(1):60-72
