案例简介：视频 @ bertiegregory/这些小北极熊幼崽不会让他们的母亲睡觉!与北美其他种类的熊不同，雄性北极熊不会在冬季栖息。但是，雌性北极熊会在冬天生下幼崽。这个特殊的家庭属于特殊的人群。哈德逊湾附近的雌性北极熊经历了所有哺乳动物中最长的禁食期之一。随着海冰 (他们的狩猎场) 在7月周围融化，它们进入陆地。在9月/10月，他们前往内陆建造一个巢穴。在2月/三月，它们带着新的幼崽跳出巢穴。然后，他们前往大海 (冬天已经冻结了固体) 捕猎海豹。因此，在他们在陆地上的八个月中，即使母亲怀孕并哺乳新幼崽，也必须不吃一顿美餐。由于这个禁食期将熊推到极限，北极温度的任何升高-因此无冰期的增加-将对雌性饲养新幼崽的能力产生重大影响。跟随 @ bertiegregory进行更多野生动物冒险。# 野生动物 # 熊 # 极地 # 冰

案例简介：Video by @bertiegregory / These tiny polar bear cubs wouldn’t let their mother sleep! Unlike other species of bear in North America, male polar bears do not den in wintertime. Female polar bears, however, den during the winter to give birth to cubs. This particular family belongs to a special population. Female polar bears that den near the Hudson Bay go through one of the longest fasting periods of any mammal. As the sea ice (their hunting ground) melts around July, they come onto land. In September/October they head further inland to build a den. In February/March, they break out of the den with their new cubs. They then head out onto the sea (which has frozen solid over the winter) to hunt seals. So for the eight months that they are on land, the mother must go without a good meal even while she is pregnant and suckling new cubs. As this fasting period is pushing the bears to their limit, any increase in Arctic temperature—and therefore an increase in the ice-free period—will have dramatic consequences to the female’s ability to raise new cubs. Follow @bertiegregory for more wildlife adventures. #wildlife #animals #bears #polar #ice

国家地理 - Video by @bertiegregory / These tiny polar bear cubs wouldn’t let their mother sleep! Unlike other species of bear in Nor

案例简介：视频 @ bertiegregory/这些小北极熊幼崽不会让他们的母亲睡觉!与北美其他种类的熊不同，雄性北极熊不会在冬季栖息。但是，雌性北极熊会在冬天生下幼崽。这个特殊的家庭属于特殊的人群。哈德逊湾附近的雌性北极熊经历了所有哺乳动物中最长的禁食期之一。随着海冰 (他们的狩猎场) 在7月周围融化，它们进入陆地。在9月/10月，他们前往内陆建造一个巢穴。在2月/三月，它们带着新的幼崽跳出巢穴。然后，他们前往大海 (冬天已经冻结了固体) 捕猎海豹。因此，在他们在陆地上的八个月中，即使母亲怀孕并哺乳新幼崽，也必须不吃一顿美餐。由于这个禁食期将熊推到极限，北极温度的任何升高-因此无冰期的增加-将对雌性饲养新幼崽的能力产生重大影响。跟随 @ bertiegregory进行更多野生动物冒险。# 野生动物 # 熊 # 极地 # 冰

国家地理 - Video by @bertiegregory / These tiny polar bear cubs wouldn’t let their mother sleep! Unlike other species of bear in Nor

案例简介：Video by @bertiegregory / These tiny polar bear cubs wouldn’t let their mother sleep! Unlike other species of bear in North America, male polar bears do not den in wintertime. Female polar bears, however, den during the winter to give birth to cubs. This particular family belongs to a special population. Female polar bears that den near the Hudson Bay go through one of the longest fasting periods of any mammal. As the sea ice (their hunting ground) melts around July, they come onto land. In September/October they head further inland to build a den. In February/March, they break out of the den with their new cubs. They then head out onto the sea (which has frozen solid over the winter) to hunt seals. So for the eight months that they are on land, the mother must go without a good meal even while she is pregnant and suckling new cubs. As this fasting period is pushing the bears to their limit, any increase in Arctic temperature—and therefore an increase in the ice-free period—will have dramatic consequences to the female’s ability to raise new cubs. Follow @bertiegregory for more wildlife adventures. #wildlife #animals #bears #polar #ice

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国家地理 - Video by @bertiegregory / These tiny polar bear cubs wouldn’t let their mother sleep! Unlike other species of bear in Nor

暂无简介