Denne fugl sover, mens den flyver
Frigatebirds fly for many days and sleep only a little.
Before you read
Before you read
En fregatfugl kan flyve i mange dage. Den flyver over det åbne hav. Den kan ikke lande på vandet. Så hvornår sover den?
Forskere satte små maskiner på fuglene. Fuglene flyver i op til ti dage. De sover, mens de flyver. Den halve hjerne sover. Det ene øje er åbent.
Det er overraskende. På havet sover fuglene kun fyrre minutter om dagen. På land sover de mere end tolv timer. De hviler sig meget derhjemme.
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