Emerging from then Den Polar bear families generally emerge from their dens in March or April when the cubs are strong enough to survive in outside Arctic conditions and make the trek to sea ice. Growing Up Polar bear cubs generally stay with their mothers for 2. Reaching Adulthood Polar bears are considered adults when they are old enough to mate. Life Span In the wild, polar bears live an average of 15 to 18 years, although biologists have tagged a few bears in their early 30s.
Name and Evolution Discover the many names for polar bears and how they evolved from brown bears. Continue Reading. Previous Name and Evolution Discover the many names for polar bears and how they evolved from brown bears.
Feeling inspired? Act Now. Join us on our journey. Become part of a community committed to protecting polar bears with our free newsletter. Sign Up Now. Help ensure the polar bear's future. The actions we take today give polar bears a chance at an even better tomorrow. Make a Difference. Brooke Biddlecombe is a PhD student at the University of Manitoba and a research affiliate with Fisheries and Oceans Canada doing research on the population dynamics of Arctic marine mammals.
Biddlecombe, B. Behavior and characteristics of mating polar bears Ursus maritimus in the Beaufort Sea, Canada. Polar Biology Search the website FR. Size matters Polar bears have a polygynous mating system—which means that males will mate with multiple females and their mating system is driven by male-male sexual competition.
Female receptiveness Males do the work of searching out females, but females indicate their readiness to mate through physiological signals. Related Paper Biddlecombe, B. Like many mothers in the animal kingdom, a polar bear will kill anyone or anything that comes near her young. Polar bears are predators, pure and simple. So what happens when they get stuck on land, with people around? There might be trouble — but as we'll find out, polar bears seldom go looking for a fight with a human.
Sign up for our Newsletter! Mobile Newsletter banner close. Mobile Newsletter chat close. Mobile Newsletter chat dots. Mobile Newsletter chat avatar. Mobile Newsletter chat subscribe. Prev NEXT. This high maternal investment means that female polar bears usually reproduce every three years, or less often, depending on cub survival. Young polar bears are susceptible to intraspecific predation. Few polar bears live longer than 25 years in the wild. Photo credit: U. Pregnant females enter maternity dens in autumn, and the cubs are born between November and early January.
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