Can smartphones help us understand more about bats?
New technology is helping scientists and members of the public learn more about the lives of bats.
Bat expert Professor Kate Jones has collaborated with artist Jeremy Deller on a device that works in conjunction with smartphones to generate digital representations of bat calls.
They hope the technology will generate more interest in how bats live.
Professor Jones and Jeremy Deller spoke to the BBC World Service about their new invention.
Produced by Daniel Gordon