A study carried out in Ivory Coast has shown that monkeys of a certain forest-dwelling species called Campbell's monkeys emit six types of alert calls. The primates combine these calls into long vocal sequences which allow them to convey messages about social cohesion or various dangers, including predation. The results were obtained by researchers at the Ethologie Animale et Humaine research group working with the universities of St Andrews in Scotland and Cocody-Abidjan in Ivory Coast. (source: sciencedaily.com)
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