Author: Chiara De Gregorio, Post Doctoral Research Fellow, University of Warwick

Don Mammoser/Shutterstock In the dense forests of Indonesia, you can hear strange and haunting sounds. At first, these calls may seem like a random collection of noises – but my rhythmic analyses reveal a different story. Those noises are the calls of Sumatran orangutans (Pongo abelii), used to warn others about the presence of predators. […]