We documented one instance of an adult male grizzly bear preying upon a black bear and four instances where circumstantial evidence suggested that grizzly bears (two cubs-of-the-year, one yearling female that was injured, and one adult male) had been preyed upon by conspecifics. We also examined feces of grizzly bears for bear remains. Remains of bears tended to be more common in spring feces and did not differ in frequency between early and late years of the study. Our observations generally support existing hypotheses concerning cannibalism among bears.
|Title||Cannibalism and predation on black bears by grizzly bears in the Yellowstone ecosystem, 1975-1990|
|Authors||D.J. Mattson, R.R. Knight, B.M. Blanchard|
|Publication Subtype||Journal Article|
|Series Title||Journal of Mammalogy|
|Record Source||USGS Publications Warehouse|
|USGS Organization||Northern Rocky Mountain Science Center|