As part of ongoing efforts required under the Endangered Species Act to monitor the population of grizzly bears in the Yellowstone Ecosystem, the U.S. Geological Survey, in conjunction with Montana Department of Fish, Wildlife, and Parks, is working to inform the public that pre-baiting and scientific capture operations are once again about to begin within eastern portions of the Custer Gallatin National Forest as well as private lands, east of the Yellowstone River and south of I-90, in Montana.