Their deep, gruff voices echo through the jungle to find other monkey groups. They communicate to avoid territorial disputes.

Deep in the rainforest, the monkeys are yodeling. Their wild calls echo across the foliage, sending signals of sex and ...

I’ve seen this species alive in the wild twice during my own fieldwork,” says Diego Cisneros-Heredia, an ecologist at the San ...

Born Free is delighted to announce this year’s Primate Society of Great Britain conservation grant winner, and report great ...