Migrant male orangutans on Borneo and Sumatra learn about unfamiliar foods in their new home range by ‘peering’ at experienced locals: intensely observing them at close range. This is what an international research team found out in a long-term study with 152 male animals observed over a period of 30 years. Peering was most frequently seen when locals consumed foods that were rare or hard to process.
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Source: ScienceDaily