Hibernation of the Black and Brown Bear Bobby Bennett Winter Ecology Field Course Spring 2006 Mountain Research Station University of Colorado, Boulder Typical Hibernation Patterns Bears do not feed for 7 months, living off body fat until late spring.
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Winter Ecology Field Course
Mountain Research Station
University of Colorado, Boulder
“Easily food conditioned; extremely clever, creature of habit; inquisitive; playful” (Brown, p.94)
“Dignified; deliberate, fearless, bold, generally peaceful; solitary” (Brown, p.94)Black and Brown Differences?
Adds 4 in. of fat prior to hibernation
Dens under large boulders, scraped out depressions under brush, in tree routes, caves, under logs, possible in trees, under buildings
20% steep slope
Adds 6-8 in. of fat prior to hibernation
Dens dug in dry earth, under large boulders, located above valley floor
30% steep slope
Slope aspect depends of exposure
61% on north slope in Rocky Mnts.
(Brown, p.150)Hibernation Differences
Brown, G. (1993). The Great Bear Almanac. Lyons & Burford, Publishers.
Heinrich, B. (2003). Winter World: The Ingenuity of Animal Survival, First Ed. HarperCollins Publishers Inc.
Laycock, G. (1986). The Wild Bears. Outdoor Life Books.
Manning, A., Dawkins, M.S. (1992). Animal Behavior, Fourth Ed. Cambridge University Press.