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Bear - Hyperphagia
Wildlife Fine Art
Photograph - Painting
A grizzly bear in fall color at its peaks in Yellowstone National Park. This was at Cub Creek on the west side of the park.In the autumn the bears are in a feasting mode called hyperphagia.Hyperphagia is a period of excessive eating and drinking to fatten for hibernation. Black bears with unlimited food and water ate 15,000 to 20,000 kcal per day and drank several gallons. Large amounts of water are needed to process the large amounts of food and rid the body of nitrogenous waste. Fall transition is a period after hyperphagia when metabolic processes change in preparation for hibernation. Bears voluntarily eat less but continue to drink to purge body wastes. They become increasingly lethargic, resting 22 or more hours per day, often near water. Active heart rates fall from 80-100 per minute to 50-60 per minute, and sleeping heart rates fall from 66-80 per minute to less than 22 per minute. All my art is generated digitally from my original photographs. All images are copyrighted � Wildlife Fine Art. All Rights Reserved. Copying and/or distributing these images without our permission is strictly prohibited. Any unauthorized usage will be prosecuted to the full extent of U.S. Copyright Law.
February 23rd, 2015
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