New migration maps serve as tools to help big game in West

The life-or-death journey made by mule deer during the second-longest big game migration in North America came down to their ability to squeeze through a fence—a discovery made by scientists using wildlife GPS tracking ...

Yellowstone's migrating bison manipulate springtime green-up

On a typical June day in Yellowstone, it's not unusual to see hundreds of bison grazing in the Lamar Valley. The herds appear to aimlessly move back and forth through meadows threaded by a winding river, just passive figures ...

One deer's journey: An epic migration is revealed in new maps

In the spring of 2016, a determined mule deer did something that, as far as anyone knows, no other mule deer had done before: She traveled a whopping 242 miles from southwest Wyoming to eastern Idaho in the greatest migration ...

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