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The grizzly bear (Ursus arctos horribilis), also known as the North American brown bear or simply grizzly, is a population or subspecies [4] of the brown bear inhabiting North America. In addition to the mainland grizzly ( Ursus arctos horribilis ), other morphological forms of brown bear in North America are sometimes identified as grizzly bears.
The last California grizzly bear sighting was in 1924 and no specimens have been seen since. [29] A small brown bear population once lived in the northern parts of Mexico, New Mexico, and Arizona. [30] This population is now extinct as the last known Mexican grizzly bear was shot in 1976. [31]
A 1959-1970 bear study suggested a grizzly bear population size of about 176, later revised to about 229. [1] Later estimates have ranged as low as 136 and as high as 540; the most recent is a minimum estimate of 236, [ 1 ] but biologists think there may be as many as 1,000 bears in the ecosystem. [ 24 ]
A grizzly bear wandered into an area of Wyoming ... t been documented in the area south of the Bighorn Mountains “since long before the Greater Yellowstone Ecosystem population was listed under ...
Grizzly 399 (1996 – October 22, 2024) [1] was a grizzly bear living in Grand Teton National Park and Bridger-Teton National Forest in Wyoming, United States. [2] She was followed by as many as 40 wildlife photographers, [ 3 ] [ 4 ] and millions of tourists came to the Greater Yellowstone Ecosystem to see her and other grizzly bears.
Without the Endangered Species Act, Wyoming could establish a grizzly bear hunting season. It's unclear how many grizzlies live in the unprotected areas outside the new proposed designated region ...
Another large male bear has been seen along the riverbanks and a female bear has been active for over a month in and out of the area. There are about 1,400 to 1,700 grizzly bears in the US.
Brown bear size, most often measured in body mass, is highly variable and is correlated to extent of food access. Therefore, bears whose range in areas with access to openings, cover, and moisture or water are on average larger, whereas those bears that range into enclosed forested areas or arid, sparsely vegetated regions, both of which tend to be suboptimal foraging habitat for brown bears ...