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  2. Life Cycle | Polar Bears International

    • Between April and late June, male polar bears search for female mates on the sea ice by following scented trails left by footpads. Mating takes place on the sea ice. But the fertile eggs don’t implant until the fall, and … 展开

    Denning Fall & Winter

    After feeding through the summer and fall, gaining as much weight as possible, pregnant female polar bears prepare to enter maternity dens to give birth to their cubs. To build a … 展开

    Polar Bears International
    Birthing

    Wild polar bear cubs are most often born in December. The mother gives birth to 1-3 cubs, … 展开

    Polar Bears International
    Polar Bear Cubs

    Totally dependent on their mothers, newborn cubs are blind, toothless, and covered with soft white fur. They weigh little more than 1/2 kg (1 lb) and are just 30-35 cm long (12 to 1… 展开

    Polar Bears International
    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. Now, mothe… 展开

    Polar Bears International
     
  1. Between April and late June

    Mating (Spring) Between April and late June, male polar bears search for female mates on the sea ice by following scented trails left by footpads. Mating takes place on the sea ice. But the fertile eggs don’t implant until the fall, and only if the female has enough fat to sustain herself and her cubs during the long denning period.
    polarbearsinternational.org/polar-bears-changing-arctic/polar-bear-facts/life-cycle/
    polarbearsinternational.org/polar-bears-changing-arctic/polar-bear-facts/life-cycle/
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  4. Polar bear reproduction - WWF Arctic

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  6. Polar Bear Life Cycle - Churchill Polar Bears

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  7. Behaviour and characteristics of mating polar bears

    2019年3月20日 · We examine aspects of the mating behaviour of polar bears in the Beaufort Sea, Canada, from 1970 to 2014 based on 135 breeding pairs observed from March through May. Mean age of paired females and paired …

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  9. Polar Bear Reproductive and Denning Behavior | SpringerLink

  10. Polar Bear Reproduction - Churchill Polar Bears

    Female polar bears usually breed for the first time at five or six years of age. Mating takes place out on the pack ice during a rather long breeding season, extending from late March to mid-July.

  11. The Amazing Breeding Behavior of Polar Bears - Arctic …

    Until recently, the polar bear’s breeding season was generally thought to take place between early April and mid-May. Probably, a significant contributing factor to determining the mating period was that little hunting by Inuit, or field …

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