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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.
Most bears are 1.2–2 m (4–7 ft) long, plus a 3–20 cm (1–8 in) tail, though the polar bear is 2.2–2.44 m (7–8 ft) long, and some subspecies of brown bear can be up to 2.8 m (9 ft). Weights range greatly from the sun bear , which can be as low as 35 kg (77 lb), to the polar bear, which can be as high as 726 kg (1,600 lb).
English: Shrinking distribution of the Grizzly Bear during post-glacial, historic and present time. From: Feldhamer, George A., Bruce C. Thompson, and Joseph A ...
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 ...
Grizzly 399 was a grizzly bear who resided on federal land in a range of hundreds of miles throughout the Grand Teton National Park and the Bridger-Teton National Forest. She was born in a den in Pilgrim Creek, Wyoming, in the winter of 1996. [2] She was captured in 2001 and fitted with a radio collar by the Interagency Grizzly Bear Study Team.
Plans announced this week by the National Park Service and U.S. Fish and Wildlife Service call for releasing three to seven bears a year for five to 10 years to achieve an initial population of 25.
Adjoining the Bob Marshall to the north is the Great Bear Wilderness of 286,700 acres (1,160 km²), and to the south of the Bob Marshall is the Scapegoat Wilderness consisting of 239,936 acres (971 km²). An additional 1 million acres of roadless National Forest, private, and BLM land surrounds the designated wildernesses on all sides, for a ...
Grizzly bears roamed the North Cascades of Washington for thousands of years but have disappeared more recently. This week, the National Park Service and the U.S. Fish & Wildlife Service ...