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ULTRASOUND doesn't just help bats fly in the dark and locate their dinner, it also serves as a social broadcast. The discovery places bats in the select group of mammals that use ultrasound to communicate - along with whales, dolphins and some squirrels. Ultrasonic bat calls can differ between species, colonies and even individuals. So Silke Voigt-Heucke of the Free University of Berlin in Germany decided to investigate the significance, if any, of different types of calls, to see if bats could identify calls from other species, for example.
(Source: New Scientist) |
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