BOZEMAN, Montana, April 26 (TNSres) -- The National Park Service Yellowstone National Park issued the following news release: As part of ongoing grizzly bear and black bear research and management efforts and as required under the Endangered Species Act to monitor the population in the Greater Yellowstone Ecosystem, the U.S. Geological Survey, in conjunction with the National Park Service, is working to inform the public that scientific capture operations are once again about to begin within Ye  more