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Chimpanzees, It Turns Out, Have Accents

Chimpanzees, It Turns Out, Have Accentsのイラスト

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Chimpanzees, it now appears, have regional accents. Scientists have reported that young chimpanzees living in different corners of Africa do not sound alike, and that the gap between them widens as the animals grow older.

The research team worked through more than eleven thousand recorded calls from infants and juveniles at two sites, a ...

The research team worked through more than eleven thousand recorded calls from infants and juveniles at two sites, a rescue centre in Zambia and a national park in Tanzania. They sorted the recordings into grunts, whimpers and laughter, then measured them. The youngest animals sounded broadly alike regardless of location. The older ones did not: each group had drifted toward its own particular manner of grunting.

That drift is the arresting part, since chimpanzee calls were long presumed fixed at birth, encoded in the animal rat...

That drift is the arresting part, since chimpanzee calls were long presumed fixed at birth, encoded in the animal rather than absorbed from its neighbours. If a young chimpanzee is instead soaking up the sound of the group around it, much as a child absorbs the vowels of a particular street without being taught them, then accent may be an older habit than anyone had been prepared to admit.

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