Bats Send Jamming Signals to Steal Rivals' Meals

At home in the cave, bats may live in one big happy colony; but when it comes to mealtime, friends quickly become rivals.

Bats rely on echolocation — sending out calls and listening for echoes — to track down their prey. Just before nabbing their meal, bats send out a series of rapid chirps to home in on their target. But a new study reports that sometimes they’re thwarted: other hungry bats nearby can send out ultrasonic jamming signals to confound their colony-mates’ targeting system and st

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