When temperatures dip below zero in Yellowstone National Park, tourists are scare but the park’s 4,500 bison carry on out of necessity.

Yellowstone’s famous geothermal areas are a lifesaver for the bison in winter. Those steaming hot springs and geysers aren’t just cool to look at; they create little pockets of warmth where ...

MAMMOTH HOT SPRINGS, Wyoming – Yellowstone National Park’s winter season begins Sunday ... Expect to encounter bison and other wildlife on park roads. Slow down or pull over until they ...

It’s no secret that Yellowstone National Park can be jampacked in the summer, when up to 1 million people jockey for space ...

Photographer Drew Simms braved extreme winter conditions in Yellowstone National Park to document its wildlife enduring a freezing temperatures as low as -37°F (-38.3°C). Over a week-long expedition, ...

Editor’s Note: This story accompanies the May 2016 issue of National Geographic magazine, devoted entirely to America’s first national park. Find more at natgeo ...

This story has been updated with information from Yellowstone ... sought lower bison populations in the park to lessen the chance of the animals migrating into Montana in the winter.

Yellowstone's bison are under threat from the moment they cross the park's boundary. Outdated management plans and misunderstandings have led to the routine roundup and slaughter of this wild icon of ...

Two federal agencies involved in the management of Yellowstone National Park’s bison should be required to conduct new environmental analysis regarding the animal’s “admittedly arbitrary ...

Elk and bison give birth in the spring. To control Yellowstone’s bison population ... where more bison migrate in winter. The small areas where hunting is concentrated has caused concern ...