Endangered Species Act protections

A judge has ordered U.S. officials to reconsider a 2015 decision that blocked Endangered Species Act protections for the iconic bison herds of Yellowstone National Park. The ruling says the Fish and Wildlife Service failed to consider a study suggesting the park’s bison population may be too small to sustain its two herds.

Yellowstone’s 5,000 bison make up the largest remaining wild population of the animals. They’re routinely slaughtered during winter migrations outside the park.