Bats use distinct structures in the larynx to produce high-frequency echolocation calls and lower-frequency social calls, according to a study by Coen Elemans at the University of Southern Denmark and colleagues, published in the open-access journal PLOS Biology. The structures used to make
The use of vocalizations as a resource for communication is common among several groups of vertebrates: singing birds, croaking frogs, or barking dogs are some well-known examples.