Capuchin monkeys are stealing howler monkey babies in weird fad 🐒🙊

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The wild population of white-faced capuchins (Cebus capucinus imitator) living on Jicarón Island has been monitored with 86 motion cameras since 2017 to capture their sophisticated use of stone tools to crack open hard fruits, nuts and shellfish. Five years into recording the footage, in 2022, a researcher noticed one of the young male capuchin monkeys with an infant monkey from another species clinging to its back. This capuchin, nicknamed Joker, picked up at least four baby howler monkeys (Alouatta palliata coibensis) over four months, sometimes holding onto them for more than a week. This behaviour spread around the population through social learning, like a cultural trend.

📹️ via Brendan Barrett / Max Planck Institute of Animal Behavior

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