How do owls spin their heads?
Until now it's been a mystery... how do owls spin their heads right round without hurting themselves?
The nocturnal birds, famous for their "twit-twoo!" sounds, can turn their heads almost full circle - a whopping 270 degrees.
Scientists who were wondering how this was possible say they have now come up with an answer.
Owls have special bones and arteries in their necks that won't twist or snap.