How do bats make their calls?

Hello all. I was asked the other evening how do bats make their calls - do they for example have voice boxes and how can they pin point moving prey so well - needless to say I could not answer that one. Thanks to Aline for pointing out this really interesting article which goes a long way to answering that question. The linked article are good too - all really worth a read!

Net

First superfast muscles in mammals help bats catch prey