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Yellowstone wolf pack territories in 2011. Wolf population declines, when they occur, result from "intraspecific strife," food stress, mange, canine distemper, legal hunting of wolves in areas outside the park (for sport or for livestock protection) and in one case in 2009, lethal removal by park officials of a human-habituated wolf. [23]
Wolves have naturally migrated in the three state region. As of 2021, the estimated stable population is 4,400 in the three states. [20] Wolves may also disperse across the Great Plains into this region from the northern Rocky Mountain region which includes Wyoming with approximately 300 wolves and Colorado with a small population.
Map showing wolf packs in the Greater Yellowstone Ecosystem as of 2002. Grey wolf packs were reintroduced to Yellowstone National Park and Idaho starting in 1995. These wolves were considered as “experimental, nonessential” populations per article 10(j) of the Endangered Species Act (ESA). Such classification gave government officials ...
The Yellowstone Wolf Project started in 1995 and since it's become one of the most detailed studies of wolves the world. They also focus on studying the day-to-day life and social interactions of ...
Wolves began to die. One example: a third of Wisconsin's gray wolf population was killed by hunters and poachers when protections were removed, researchers at the University of Wisconsin found in ...
The DNR’s 2024 winter wolf population survey estimated at least 762 wolves distributed among 158 packs — a 131-animal increase since the last survey in 2022 and the highest estimate since 2012 ...
Greater Yellowstone Area Wolf Pack Territories 2002 (95% MCP except where noted) * A 75% MCP was calculated for these five home ranges because of a high fluctuation in movements.
The recovery of populations throughout the states of Wyoming, Montana, and Idaho has been so successful that on February 27, 2008, the U.S. Fish and Wildlife Service removed the Northern Rocky Mountain wolf population from the endangered species list. [127] As of January 2023, there are at least 108 wolves in the park in 10 packs. [128]