Slo-Mo Footage Reveals How Pigeons Make That Clapping Sound At Takeoff

They're one of the most annoying things about living in a big city, but pigeons — aka the rats of the sky — have developed a pretty clever defence mechanism designed to scare off attackers: a loud and repeated clapping noise that you probably hear when you scare an annoying pigeon into fleeing.

As BBC Earth Productions discovered by studying a pigeon's takeoff with a high-speed camera, the noise seems to be generated as the bird's muscular wings and stiff feathers clap together on the upswing. The footage also reveals how graceful a pigeon and almost makes you want to like them, until you remember the mountain of crap on your air conditioner and reach for a broom.

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