Islands in warm tropical waters don't experience seasonal extremes.
地處溫暖熱帶海域的島嶼無法體驗極端的季節變化。
The Seychelles, lying off the coast of East Africa,
位于非洲東海岸的塞舌爾群島,
provide a sanctuary for sea birds all the year round.
是海鳥們全年的庇護天堂。
Fairy Terns are permanent residents.
塞舌爾白燕鷗是這里的永久居民。
They take a fairly relaxed view about what constitutes a nest.
它們筑巢并不講究。
A bare branch is quite enough.
一根光禿禿的樹枝就足夠了。
Climbing onto it to incubate has to be done with care.
不過爬上去孵蛋需要格外小心。
Once a year, the noddies arrive.
每年白燕鷗都會來一次。
They do make nests, and Pisonia trees provide their young with a rather less precarious start in life.
它們老實筑窩,腺果藤樹能讓小鳥的幼年過得安全一些。
Nesting on this island looks idyllic.
在這個島上筑巢看起來幾乎完美。
But behind the beauty, there's a sinister side.
但美麗的表象后也有危險的一面。