The cropped photo was taken soon after the group of approximately 40 bison including calves had been hazed and herded into the capture facility's holding pen on National Forest land just east of Yellowstone National Park. This photo is yet another documenting of the fact that hazing and penning is risky for bison calves. When Yellowstone National Park was created, its western and northern borders cut through natural areas wherein bison move freely and forage. The capture facility is near habitat quite natural for the buffalo and stands as the major reason they migrate from the Park in winter and spring. These not large locales are mostly in National Forest adjoining Yellowstone, and should be codified as bison sanctuary.
For more information, see various webpages at:
http://www.buffalofieldcampaign.org/