Do birds fly for days while over the ocean? How do they sleep?
In: Biology
Some birds have the ability to sleep uni-hemispherically. Meaning one half of their brain goes to sleep while the other half takes the wheel, and vice versa. This is how a lot of fish sleep too so they can keep swimming. In birds that don’t have that ability, I’m fairly sure I saw a David Attenborough documentary where some butterflies did an endurance flight across an ocean. Those who weren’t strong enough drowned, and those who were made it to land. I’m guessing this applies to the birds too?
Edit – for those asking for links etc, the book: Why We Sleep by Dr Matthew Walker is one of the most fascinating things I’ve ever read, and my source. Thanks for all the upvotes guys.
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