greater yellowstone ecosystem

Panthera

For the past 17 years, researchers have been tracking mountain lions, also called pumas, north of Jackson Hole. When they started the research, the population was around 20 to 25 adults, but now it's down to about 10 adults. 

Buffalo Bill Center of the West

In the past, natural history museums sent staff and researchers on expeditions to collect specimens in the field. But when the Draper Natural History Museum officially opened its doors in the early 2000s, it wanted to try to avoid that practice.

U.S. Forest Service

The number of non-native lake trout in Yellowstone Lake is on the decline. Yellowstone biologists are optimistic that this means the native cutthroat trout population may be recovering.

National Digital Library of the United States Fish and Wildlife Service

Since the last week of September when the grizzly bear returned to the federal threatened species list, there have been 15 grizzly mortalities. But are these numbers especially high?

Eleven grizzly bears in the Greater Yellowstone ecosystem have been euthanized since the beginning of September in a "particularly bad month" for grizzly conflicts, the Powell Tribune in Wyoming reports.

That rate may be normal for the fall.

Kamila Kudelska

A federal district court judge recently heard both sides in a hearing debating whether to put the Greater Yellowstone Ecosystem grizzly bear back under federal protection. No decision has been made yet but the judge stalled Wyoming and Idaho's grizzly hunt for a couple of weeks while he decides the case.

Grizzly bear
Credit Grizzly bear on Swan Lake Flats, Yellowstone National Park; Jim Peaco

A federal district judge cited potential grizzly hunts when denying the federal government’s request to delay lawsuits that challenge the bear's delisting.