(Max Planck Institute for Evolutionary Anthropology) An important question in the evolution of language is what caused animal calls to diversify and to encode different information. A team of scientists led by Catherine Crockford of the Max Planck Institute for Evolutionary Anthropology found that chimpanzees use the quiet 'hoo' call in three different behavioural contexts -- alert, travel and rest. The need to stay together in low visibility habitat may have facilitated the evolution of call subtypes.
from EurekAlert! - Social and Behavioral Science https://ift.tt/2KOKzGS
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