Nest-building in primates

Certain extant strepsirrhines and hominid apes build nests for both sleeping and raising families. Hominid apes build nests for sleeping at night, and in some species, for sleeping during the day. Nest-building by hominid apes is learned by infants watching the mother and others in the group, and is considered tool use rather than animal architecture. Neither Old World monkeys nor New World monkeys nest.

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