Campbell's Monkeys Combine Up to 25 Calls, Challenging Human Language Uniqueness
Updated
Updated · Futura · Aug 7
Campbell's Monkeys Combine Up to 25 Calls, Challenging Human Language Uniqueness
1 articles · Updated · Futura · Aug 7
Summary
Scientists found Campbell's monkeys build vocal sequences of up to 25 calls, arranging them by rules that mirror syntax—a core feature long treated as uniquely human.
Male monkeys use distinct alarms such as “krak” for leopards and “hok” for crowned eagles, then modify them with an “-oo” suffix to broaden or soften the warning.
Karim Ouattara's team documented the system in Taï National Park by using fake predators and playback experiments, helping reveal how the calls map to specific threats and contexts.
Female Campbell's monkeys also take turns in exchanges, while younger animals interrupt more often before learning the pattern, suggesting conversational rules alongside structured call combinations.
The findings add to evidence that primate communication can be more language-like than once thought, even if human speech remains far more abstract and flexible.