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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]
In recent years, however, Yellowstone's elk population has plummeted. The Northern Herd, the only herd that winters in the park, has declined from nearly 20,000 animals in 1994 to less than 4,000 in 2013. Ecologists have linked this decline to a declining population of cutthroat trout in Yellowstone Lake, caused by invasive lake trout. With ...
In late 2008, Wolf 302M decided to disperse from the pack with a group of five younger males (his nephews and sons), drifting through rival pack territories until joining four females of the Agate Creek Pack, one adult, one young adult, and two yearlings, to form the Blacktail Plateau pack in late 2008, which 302M began leading.
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 ...
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.
A California gray wolf, dubbed OR 85, in 2023. The wolf was fitted with a satellite collar to help the California Department of Fish and Wildlife track the state's burgeoning wolf population.
The agency said the new genetic method, which produced similar results as the camera method, put last summer’s wolf population at around 1,150 animals — down about 200 from the previous year.
A wolf pack re-introduced in 1995 was called the Soda Butte Pack. It was later renamed the Yellowstone Delta Pack in 2000 after all the originals members of the pack died. [ 9 ]