+72

It's dangerous for birds to fall asleep, amirite?

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Framie1s avatar Animals & Nature
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Some migratory birds on their long trip have evolved to let half their brains go to sleep at a time so they're always at least vaguely awake enough to get by... like me in math class back in the day.

fragsworths avatar fragsworth Yeah You Are +9Reply

While flying.

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