The secret of the owl’s silent flight has been discovered

The Japanese University of Chiba devoted a study to the flight characteristics of owls and learnt how this bird of prey manages to remain silent in motion.
It turned out that there is a special microscopic “fringe” on the wings of owls, and it is this fringe that has a key role in “noise cancellation” during flapping.

Experts created models of owl wings, one of which was without a fringe, and tested them on an aerodynamic stand, simulating the real speed of the bird.