Tag Archives: Population

A study argues the number of Yellowstone grizzlies could be in decline and far from the robust status needed to remove the bears from endangered status.

The annual census of grizzly bear population in the Yellowstone National Park area showed a slight decline this year, leading experts to wonder if historic yearly growth in the numbers has come to an end.

Wyoming officials aren't shy about wanting to clear more grizzly bears out of the Greater Yellowstone Ecosystem, estimating there are over 1,000 grizzlies in the area (despite an official estimate of 600) and clamoring for the ability to kill more.

How many raptors call Yellowstone National Park home? A study of the eagles, hawks and owls in the Park should establish a baseline and give researchers solid data for future research.

Seeking to determine how many bison can be supported in Yellowstone National Park, the National Park Service and Syracuse University Professor Douglas Frank are studying the effects of grazing on the Park's grasslands -- and perhaps countering some negative beliefs about how bison impact the ecosystem.

The semi-annual estimate of the Yellowstone National Park bison population is out, now pegged at 3,900 bison -- up significantly from last summer's estimate of 3,300 bison, but far short of the peak population of 5,000 in 2005.

When U.S. District Court Judge Donald Molloy ruled that U.S. Fish and Wildlife Service illegally limited the size of protected territory for the endangered lynx, he may have opened the door for the elusive lynx to make a reappearance in Yellowstone National Park.

A National Park Service estimate of bison in Yellowstone National Park pegs the number at 3,000, an increase over 2009's estimated bison population.