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Orangutans' Cultural Diet: 250 Items Learned Socially

11/24/2025

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Summary

Story summary

The study published in Nature Human Behaviour finds that wild orangutans develop a culturally dependent diet repertoire of nearly 250 items.
Researchers from the Max Planck Institute of Animal Behavior conducted a 12-year observational study in Indonesia.
They show that young orangutans acquire knowledge through social interactions, observing others and feeding with conspecifics.
Without these inputs, diet development declines, underscoring cultural transmission's role in survival amid dwindling populations.

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Story summary

The study published in Nature Human Behaviour finds that wild orangutans develop a culturally dependent diet repertoire of nearly 250 items.
Researchers from the Max Planck Institute of Animal Behavior conducted a 12-year observational study in Indonesia.
They show that young orangutans acquire knowledge through social interactions, observing others and feeding with conspecifics.
Without these inputs, diet development declines, underscoring cultural transmission's role in survival amid dwindling populations.