A herd of bison held up traffic in Yellowstone National Park in Wyoming, footage posted online on Tuesday, April 15, shows.

Yellowstone bison now breed as one interlinked population. Genetic studies show strong gene flow across all bison herds.

For Andy Stevens, there’s not a much better view than that of sunshine on the snow-capped Bighorn Mountains behind calves ...

A government act to protect wild bison in Colorado aims to prevent poaching while taking a step forward after ...