Yellowstone National Park Biologists have been capturing more bison on the northern end of the park this month in efforts to bring the herd size to what has been determined as optimal numbers for the habitat. Park Spokesman Al Nash says that effort was discussed last summer along with outlining a population objective of between 3,000 and 3,500 animals. He says to date, state and tribal hunters have taken just over 200 bison from the Greater Yellowstone Ecosystem outside the park. He adds that as of late Wednesday, a little over 150 bison had been transferred to the tribal partners for slaughter, or to USDA-APHIS for a research project. Nash says there is a significant number of bison in the Mammoth/Gardiner area and so there is a strong potential for the capture and elimination of more bison in the near future. An environmental group dedicated to the preservation of bison object, stating in a recent news release that the area is the animals’ home, and they are simply trying to migrate for their survival.