Earlier studies have documented half brain sleep in a wide range of birds.

早些时候的研究已经记录了种类广泛的鸟类的半脑睡眠。

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Assigning different jobs to different brain halves may be especially advantageous for animals such as birds or fish, whose eyes are placed on the sides of their heads.

将不同的工作分配给不同的大脑半球，可能对鸟类或鱼类等动物特别有利，因为它们的眼睛长在头部两侧。

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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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