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Spring quickly gives way to summer in these northern climes.
在北方地區，春天很快被夏天取代。
It's a brief respite from the harsh conditions of winter.
條件艱難的冬季過后只有短暫休整。
For all creatures, raising a family is the highest priority.
對所有生物來說，養家是當務之急。
Kittiwakes lay two eggs on average, but only half the young will survive, fed on regurgitated food ferried in a relay by both parents.
三趾鷗平均產兩枚蛋，但只有半數的幼雛能夠存活，它們的雙親輪流捕食回來后再反芻喂給它們。
Guillemots also nest here.
海鳩也在這兒筑巢。
They often mingle with kittiwakes and high density breeding colonies, sometimes exceeding 100,000 pairs.
它們經常和三趾鷗以及高密度的鳥群混在一起，有時數量超過十萬對。
Guillemots lay a single egg.
海鳩只產一枚蛋。
It's pear shape stops it from rolling off.
梨形的蛋不易滾下懸崖。
In just three weeks, the chick will leap from this ledge joining its parents to feed in sea.
僅僅三周之后小海鳩就會從巖架處跳下，跟隨父母到海上覓食。
Scandinavia boasts some of the largest breeding colonies of sea birds in the world.
世界上最大的海鳥繁殖群中有一些就在斯堪的納維亞。
Little Auks, kittiwakes and Guillemots, all here to benefit from the bounty of the sea.
侏海雀、三趾歐和海鳩都是來享受大海的恩賜。
Early summer is the best of time for most regions of Scandinavia.
初夏是斯堪的納維亞大部分地區最好的時節。
The Baltic Sea is no exception.
波羅的海也不例外。
Grey seals can afford to take it easy.
灰海豹可以很悠然。
Hunting and pollution drove them almost to extinction in the 1970s.
捕殺行為及污染使它們在二十世紀七十年代幾乎滅絕。
Now completely protected, their numbers have recovered to about 20,000.
現在，由于完全受到保護，其數量恢復到了兩萬頭左右。
They are superbly adapted to life in the water, streamlined and agile.
它們非常適合水中的生活，身體呈流線型且很敏捷。
Their whiskers are ultra-sensitive to water movement.
胡須對水的移動超級敏感。
They use them to track fish.
它們利用這一點來追蹤魚兒。
It's the height of summer.
現在是盛夏。
Warm waters and plenty to eat.
水很溫暖，也有很多吃的。
The Osprey now have three hungry mouth to feed.
魚鷹現在有三張饑餓的嘴要喂養。
He can't afford to miss.
容不得它疏忽。
He can choose from a wide menu.
它的菜單很豐富。
Today, it's salmon trout.
今天吃的是鱒魚。
