Sheep Losses on Grizzly Bear Range
Johnson SJ and Griffel DE. 1982. Sheep Losses on Grizzly Bear Range. The Journal of Wildlife Management. 46(3):786-790
The Endangered Species Act requires federal agencies to avoid jeopardizing the continued existence of classified species. Following the federal listing of the grizzly bear (Ursus arctos horribilis ) as threatened in 1975, the Targhee National Forest, Idaho, began monitoring grizzly bear predation on sheep grazing within forest allotments adjacent to Yellowstone National Park. Program objectives were to record, 1) the data and location of grizzly bear depredations on sheep, 2) the sex and age of grizzly bears that killed sheep, and 3) the number of sheep lost to grizzly bears and other causes. This report summarizes information obtained in 1976-77 on 5 sheep allotments.
- Type
- Journal Article
- Authors
- Johnson, S; Griffel, D
- Units
- YELL
- Keywords
- Animal Studies, Behavior, black bear(Ursus americanus), domestic animals, grizzly bear(Ursus arctos), Mammals, Mortality, Predation, Sheep