Gray wolves were reintroduced in Yellowstone National Park in 1995 to help control the numbers of elk that were eating young ...

Sitting in an old-growth spruce fir forest, Doug Smith says he can see first-hand the impact of reintroducing wolves on the larger ecosystem of Yellowstone National Park. Long before Yellowstone ...

Thirty years after wolves were brought back from near extinction in the U.S. Rocky Mountains, the state of Idaho is back in ...

For the first time in 80 years, a new generation of fully-fledged aspen trees has grown in Yellowstone’s northern range.

The presence of humans and human infrastructure in U.S. national parks has lasting effects on the behaviors of the large ...

Yellowstone grizzly bears have surpassed federal recovery goals, but conservation organizations argue they still need ...

Officials with the Idaho Department of Fish and Game estimated the wolf population in Idaho to be about 1,235 wolves as of ...

Colorado’s wolf restoration program, mandated by the 2020 Proposition 114, has spiraled into a financial boondoggle, costing taxpayers $8 million in five years — greatly exceeding the annual estimates ...

Landowner Paul Lister has long said he wants to release wolves at Alladale. Over two decades after he bough the reserve, where are they? And ...

Anecdotal evidence suggests bison might have specific behaviors associated with death and mourning. In one case in northern ...

The persistent presence of humans and their infrastructure in U.S. national parks has yielded dramatic changes in the behaviors of large animals who live there, a new study has found.

Many summer visitors to America's national parks hope for a glimpse of a moose or a bighorn sheep — or perhaps to spot a wolf ...