Bat-sound library tracks biodiversity

Scientists have compiled the biggest known library of bat sounds in an effort to identify and conserve rare species. Mexico is home to many of the world's bats, but it also has one of the highest rates of extinction. International researchers recorded more than 4,500 calls from about half of Mexico's 130 bat species. The audio library allows bat calls to be identified automatically, helping to monitor any changes in biodiversity. Co-researcher, Prof Kate Jones, of UCL and Zoological Society London, said the ability to map bats was crucial for implementing effective conservation measures.