Causal knowledge of predators' behaviour in wild Diana monkeys

Article Abstract:

Wild Diana monkeys, Ceropithecus diana, in the Tai forest, Ivory Coast, show differing responses to chimpanzees' alarm calls. Some monkeys seem to recognize that these alarm calls indicate the potential presence of a leopard, while others behave as if they are unable to distinguish between the different causes underlying chimpanzee vocalizations. It appears significant that the monkeys' chances of seeing an encounter between chimpanzees and a leopard are very low. The findings of this research support the view that monkeys responding cryptically to chimpanzee alarm calls do so because they cannot understand the meaning of these calls.

Alarm responses (Animal behavior), Alarm signaling (Animal communication)

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Referential labelling in Diana monkeys

Article Abstract:

Research into how wild Diana monkeys, Cercopithecus diana, of the Tai forest, Ivory Coast, label predation events is presented. These monkeys consistently respond to predator category irrespective of immediate threat or direction of attack.

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Diana monkey long-distance calls: messages for conspecifics and predators

Article Abstract:

The predation and communication context of Diana monkeys (Cercopithecus diana diana) long-distance calls was studied. Monkey long-distance calls function as defense against predators, by conveying predator detection and by warning co-species about the type of danger present. It also functions as within-group symbolic signals that denote different types of predators. The experiment on Diana monkeys allowed not only the responses to alarm calls but also the factors that influence call production.

Predation (Biology), Animal sounds

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