Here’s Why Bats Are Such Efficient Insect-Killing Machines

Contrary to popular belief, bats are not blind. However, their sense of sight does come a distant second to their sense of hearing. Bats have evolved to strongly rely on their sense of hearing to hunt, avoid predators, and find their way around.

In this video, David Attenborough explains how a bat produces high-frequency sounds in its throat and projects them forward. The sound waves reflect off surrounding objects, and the bat picks up the subsequent echoes with its large ears. This allows the bat's brain to form a visual map of its surroundings — an ability called echolocation.

Can't get enough of bats? Check out this adorable bat orphanage in Australia.

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