When it comes to echolocation, some bats just wing it

My latest piece for NationalGeographic.com is about scientists discovering that some bats can echolocate using sonar clicks from their wings. In every previously known example of echolocation, animals such as bats, dolphins, some birds and even some shrews use some sort of vocal organ (larynx, tongue, ‘sonar lips’ etc) to produce high-frequency sounds that they […]