Although bonobos and chimpanzees are similar in size, bonobo calls sound an octave higher than chimpanzee calls. Researchers at the Max Planck Institute for Evolutionary Anthropology in Leipzig, ...
Although bonobos and chimpanzees are similar in size, bonobo calls sound an octave higher than chimpanzee calls. Researchers explain this discrepancy with the fact that the vocal folds of bonobos are ...
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