On quiet nights across large swaths of the African bush, you may hear a series of whooping calls in the distance. This unique sound is the long-distance vocalisation used by spotted hyenas (Crocuta ...

April 23, 2009 -- Deteriorating screws in bridges, fish that listen in the dark, medical devices that use sound to treat disease, the detected comeback of a long-gone whale, the sound of hyenas, ...

The combination of dogged field expeditions and machine learning algorithms has revealed that long-distance hyena calls feature signatures unique to individuals -- a form of caller ID distinct enough ...

Acoustic analysis of the 'giggle' sound made by spotted hyenas has revealed that the animals' laughter encodes information about age, dominance and identity. Researchers writing in the open access ...

Jason Goldman: Morning in Tanzania. The sun rises over the Ngorongoro Crater. The spotted hyenas are beginning their day, while Eve Davidian from Germany's Leibniz Institute for Zoo and Wildlife ...

It is dusk when Kim Wolhuter parks his battered Toyota off-road vehicle a few metres from a hyena den. The sun has just disappeared behind the acacias, a blood-red ball, and the day's heat is ...