To study birds, of course.

当然，是去研究鸟类。

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Landfill sites on the Iberian peninsula have long attracted local white storks, but all of the Spanish birds tagged in the study flew across the Sahara desert to the western Sahel.

伊比利亚半岛上的垃圾填埋场长期以来一直吸引着当地的白鹳，但研究中标记的所有西班牙鸟类都飞越了撒哈拉沙漠，来到了萨赫勒的西部地区。

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Birds that are literally half asleep—with one brain hemisphere alert and the other sleeping—control which side of the brain remains awake, according to a new study of sleeping ducks.

根据一项关于睡觉的鸭子的新研究来看，半睡半醒的鸟儿——大脑的一个半球处于警觉状态，另一个半球处于睡眠状态——控制着大脑的哪一边保持清醒。

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Scientists also recorded countryside great tits and found they sang at a lower pitch and, in turn, city birds found the rural droll difficult to understand, the study found.

BBC: Birds in cities 'singing louder'

According to a 1998 study by Louisiana State University, more than 500 million birds fly over the Gulf and enter the United States along coastal areas in Louisiana and Texas each spring.

CNN: Oil spill could be disaster for animals, experts say

An aim of the study is to better understand the part hedgehogs play in the decline of the birds.

BBC: Hedgehogs may have returned to cleared areas of Hebrides