Yellowstone volcano: Why are THOUSANDS of animals leaving the active supervolcano?

Yellowstone grizzly bears and wolves, for instance, feed on baby elk in the Spring.

Professor Middleton said: “These elk eat a lot of things, and they are eaten by a lot of things, so wherever these masses of hundreds or thousands of elk are on the landscape determines who gets to eat and who doesn’t.

“In some cases, this could be sensitive populations of carnivores, like grizzly bears or wolves, and on the human side, it could be hunters, some of whom are making their income as outfitters and guides.”

According to the US National Park Service, Yellowstone as the largest concentration of mammals in the “lower 48 states” in the US.

The supervolcano park is, in particular, notable for its high concentrations of predators like bears, coyotes, wolves and mountain lions.