A flock of birds flying in perfect unison is one of the most beautiful sights in nature. But how do these birds manage to stay in such perfect harmony? Researchers at the University of Oxford have discovered that the behavior of birds in a flock is determined by the structure of their feathers. By studying the feathers of a variety of bird species, they found that different birds have different feather structures that enable them to move in unison. The researchers believe that the structure of a feather allows a bird to sense the movements of other birds in its flock, enabling the birds to move in perfect harmony. This research could help us better understand how animals interact with one another in large groups.

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source: Phys.org