These birds are able to rotate their heads almost 270 º without problem. Finally,it finds a scientific explanation for this peculiar behavior.
His bone structure and circulatory system have adapted to deal with a head and eyes as large in proportion to their body.
During the experiment, they inject dye into the arteries of owls died from natural causes to mimic the flow of blood. It was found that blood vessels as small balloons are inflated to store the liquid. The reserves, created on the base of the skull, let irrigate your head as this turned.
In addition, the owl has very spacious cavities vertebrae, which leave enough gap for the twisting neck arteries. In case they are compressed, there are connections that allow inter-arterial blood flow
at all times.
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