Bats Use Signal Jamming To Ward Off Competitors

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Bats On Ceiling of Lodge
La Selva Biological Reserve, Costa Rica
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Just like Navy engineers who jam the sonar of enemy ships, bats can jam the signals of other bats to ward off competition for food.

 Bats hunt by echolocation, which means they emit high-pitched sounds and listen to the echoes that bounce off their prey. But competition for food can be fierce, and Mexican free-tailed bats emit a special call that can interfere with the sonar of other bats that are pursuing a meal.

Using high-speed infrared cameras and microphone arrays Aaron Corcoran, a researcher, was examining the interaction between the bats and their prey, moths, when he noticed the bats produced a strange sound, which they only made when another bat was homing in on the moth.

"It sweeps through the frequency range that bats use, and that’s the standard method used to jam sonar and radar," Conner told Live Science. Read the entire article.

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