Bear-animals-image

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Bear-animals-image

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Wildlife Fine Art

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Photograph - Rf Image

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This image is for sale at http://licensing.pixels.com/profiles/wildlife-fineart.html Thank you !
A grizzly bear on a carcass feeding. USA TODAY reported on June 24, 2013. The government's latest estimate of 718 bears in the Yellowstone area is up from prior published estimates of roughly 600 bears. That does not mean the bear population suddenly grew by about 100 bears. U.S. Geological Survey bear researcher Frank van Manen said the new figure results from revisions to prior estimates based on adult male bear death rates that were lower than previously thought. One reason more effort has gone into counting bears is that they are now spread across a much bigger landscape, said van Manen, who leads an interagency grizzly bear study team for the Yellowstone region. The results of those aerial surveys are corroborated by other factors, including the expansion of the animals' range and a trapping program that consistently identifies new bears, he said. U.S. Fish and Wildlife Service grizzly bear coordinator Chris Servheen said the government's methods have been reviewed by outside scientists and other government agencies. "We're certainly interested in what they did," Servheen said of Doak's work. "But we've done a lot of work on this. We've given very careful consideration and critiques to everything we've done multiple times.
"Unlike many mammals, bears can see with their eyes in color. They can almost see as well as we do, and they have an excellent sense of smell. The grizzly bear (Ursus arctos horribilis) is a circumpolar mammal and a subspecies of brown bear (Ursus arctos).Most bears are born without fur. Cubs can climb, but after a couple of years, their front claws grow too long (up to 4 inches), and they lose Ease of the ability, but they still can climb if needed. They can eat large quantities of food and store significant amount of fat without suffering from health problems. This uncanny ability of grizzlies to store fat content and evade heart diseases continues to baffle scientists all over the world. Bears spend most of their time feeding in preparation for winter hibernation. This period is called hyperphagia stage. The bears are in the hyperphagia stage. Meaning this is a period of intensive feeding by grizzly bears before hibernation. They will consume as much food as possible to make it through their period of hibernation.Whitebark pine seeds are more than 50 percent fat and are a primary, and preferred fall food source for grizzlies.They grow at a higher elevation. Bears can run up to 30 to 40 miles per hour, that is as fast as some running horses. The fastest human can run about 27 mph. A grizzly bear can smell 7 times better than a bloodhound, and said to be 100 times better than a human. Grizzly bears walk flat-footed similar to humans, but are bow-legged for stability and strength. Grizzly bears may gain as much as three pounds of weight a day as they prepare for hibernation. In the Yellowstone ecosystem, grizzly bears tend to dig or locate dens on the mid to upper one-third of 30-60 degrees slopes with northern exposures between 6,562-10,006 feet in elevation. Pregnant females den at higher elevations than other females and male bears. Hibernation is varied by as much as one month depending on weather conditions. There are several different types of dens utilized by bears. Grizzly bears tend to excavate dens at the base of large trees often on densely vegetated north-facing slopes. This is advantageous in the Yellowstone ecosystem due to prevailing SW winds which accumulate snow on northerly slopes and insulate dens from temperatures which often drop as low as -40 degrees to -60 degrees .Grizzly bears in YNP usually dig new dens but on occasion, dens (especially natural cavities) are re-utilized.

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May 31st, 2014

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