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Hibernation is a state of minimal activity and metabolic depression undergone by some animal species. Hibernation is a seasonal heterothermy characterized by low body-temperature, slow breathing and heart-rate, and low metabolic rate. It is most commonly used to pass through winter months – called overwintering.
State wildlife officials estimate the state's black bear population has remained stable for the past 10 years at 50,000 to 81,000 to animals. Bears can hibernate under decks, in crawl spaces
Winter is finally here, and bears are getting ready to find a den to hibernate in over the next few months. In Wyoming's Yellowstone National Park, one bear was caught prepping for his long sleep ...
Anna's hummingbird (Calypte anna) in nocturnal torpor during a cold winter night (−8 °C (18 °F) near Vancouver, British Columbia. The bird remained in torpor with an unchanged position for more than 12 hours. Torpor has been shown to be a strategy of small migrant birds to preserve their body energy stores.
A grizzly bear at Maryland Zoo was captured on CCTV struggling to stay awake as hibernation season approaches. During their long winter sleep, the body temperature of a bear dips to about 30-35C ...
Although a bear's body temperature decreases less than that of other mammals which undergo true hibernation, mostly changing around 6-7 degrees Celsius, this is a result of their large, heat-retaining body masses. [2] Their metabolism, the main indicator of hibernation, lowers significantly. [3]
Bears of northern regions, including the American black bear and the grizzly bear, hibernate in the winter. [ 110 ] [ 111 ] During hibernation, the bear's metabolism slows down, its body temperature decreases slightly, and its heart rate slows from a normal value of 55 to just 9 beats per minute. [ 112 ]
"Upon emerging from hibernation and leaving their winter dens, bears are ready to find food, and that can sometimes put them a little too close to people," Adam Hammond, state ...