A Signal for Solitude: Monkeys Create Their Own Rudimentary Language Sign

The Colchester Zoo in England is home to a community of mandrills, the largest of the monkeys. One of these mandrills, a female named Milly, began covering her eyes with her hand when she was three. A dozen years later Milly and her zoo mates continue to perform this gesture, which appears to mean “do not disturb.” The signal is the first gesture with cultural roots reported in monkeys

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A Signal for Solitude: Monkeys Create Their Own Rudimentary Language Sign