The Bronx is home to five bat species, scientists say.
For a study from the Wildlife Conservation Society and Fordham University, the first known of bats in New York City, the researchers put acoustic-recording devices on rooftops in four spots across the borough. The recorders are programmed to capture the echolocation calls that the bats produce in flight in order to navigate and locate their prey.
The recorded calls are processed through a software program, SonobatTM, which identifies bat calls by species. Listen below to some of the calls they found.
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