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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]
The current population of lions in Yellowstone is estimated to be 18-24 animals and is thought to be increasing. Mountain lions live an average lifespan of about 12 years in the wild. Mountain lions were significantly reduced by predator control measures during the early 20th century.
A reintroduced wolf in Yellowstone National Park. Starting in 1914, to protect elk populations, the U.S. Congress appropriated funds to be used for "destroying wolves, prairie dogs, and other animals injurious to agriculture and animal husbandry" on public lands. Park Service hunters carried out these orders, and by 1926 they had killed 136 wolves.
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 ...
The rest of the team on the ground was anxious to hear those words after the low-flying helicopter crew had been working all morning to get close to one of the Mexican gray wolves that had been ...
Montana wildlife commissioners on Friday moved to shut down gray wolf hunting in a portion of the state around Yellowstone National Park, amid mounting criticism over a record number of the ...
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 ...
For Yellowstone's dedicated wildlife watchers, a good look or photo of a wolf, grizzly — or especially an elusive wolverine or lynx — makes for a good day in the field.