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By the time the chicks are just a few weeks old, they are able to swallow whole lemmings.
它們長到僅僅幾個星期大的時候就可以吞下整只的旅鼠了。
Strong stomach acid digests the flesh, but the bones and furs of the lemmings are regurgitated.
強(qiáng)烈的胄酸消化著鼠肉，但是旅鼠的骨骼和毛被反芻出來。
This young owl's eyes are clearly too big for its beak.
這只幼鳥的眼睛比起它的肚子顯然太大了。
There are many more birds around the tundra at this time of the year, most are unable to fly, and their mothers must protect them at all costs.
每年的這個時候苔原上還有很多各種各樣的幼鳥，大多數(shù)都還不會飛，媽媽們則必須盡全力保護(hù)它們。
Having to feed such a large number of chicks means that this female snowy owl is on the look out for any opportunity.
由于有一大群幼鳥需要喂養(yǎng)，這只雌性雪鸮絕不會放過任何捕食機(jī)會。
As these goslings prepare to take their first swim, the female snowy owl spots her chance.
當(dāng)這群小野鵝正準(zhǔn)備嘗試它們的初次游水，雌雪鸮發(fā)現(xiàn)了這次捕食良機(jī)。
The owls know the adult geese won't give up their young without a fight and must work together to lure the larger birds away.
雪鸮知道成年野鵝不經(jīng)過爭斗是不會棄幼鵝于不顧的，而它們必須配合行動將成年野鵝引開。
The two hours attack sending the large geese flee for their lives.
2個小時的攻擊迫使成年野鵝為保命逃走了。
Although the geese match the owls for size and weight, both the male and female could easily take down the goose single-handed.
盡管野鵝在體型和重量方面與雪鸮相當(dāng)，但無論是雄性還是雌性雪鸮都足以獨(dú)自制伏成年野鵝。
But the owls aren't hunting the adults, they just need them out of the way.
不過雪鸮并不去捕捉成年野鵝，它只需要它們離開。
The female owl now turns attention to the goslings. Realizing the danger, the geese now give chase to the owls.
現(xiàn)在雌性雪鸮轉(zhuǎn)而去捉小鵝。意識到危險(xiǎn)，野鵝朝雪鸮追去。
This young gosling is far too big to be swallowed whole and will have to be shared among the entire brood.
這只小鵝太大了，無法被整只吞下，因此將被肢解以供整窩幼鳥享用。
The summer time abundance of food is almost over and within weeks, the threat of starvation will once again become reality for all the animals of the tundra.
食物充沛的夏天快要結(jié)束了，而幾周之內(nèi)饑餓的威脅將再次成為苔原上動物們面臨的現(xiàn)實(shí)困難。
