A swarm of hundreds of thousands of bats roosts in the Jornada caves in New Mexico Laura Kloepper A trained hawk carried sensors through a swarm of hundreds of thousands of bats, recording data that helped researchers figure out how the flying mammals manage to pick out their own high-pitched echoes from those of other chatty bats. If you have ever carried on a conversation in a noisy crowd, you have solved what is known as the , focusing on a single voice among many. This isn’t just a human.
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