[The Conversation Africa] Sound plays an important role in nature. It also helps researchers to study and interpret different landscapes and the species that live there. Most animals make sound; biologists often rely on chirps, squawks or whistles to describe and identify species or groups of species. They can also extract behavioural information from sound. For instance, researchers have found that the yellow-casqued hornbill in West Africa can distinguish predator-specific alarm calls made by Diana monkeys.
