A recent study published in Frontiers in Psychology provides fresh evidence that chimpanzees pass down essential foraging skills through deliberate social learning. According to the findings, adult chimps do not merely demonstrate tool use; they actively model the behavior and then hand their tools to juveniles, allowing the younger animals to mimic the motions under supervision.
Andreu Sánchez-Megías, a graduate student at the University of Barcelona and the Jane Goodall Institute Spain based in Senegal, noted that this exchange is critical for acquiring complex skills. “Receiving food and tools from experienced individuals, which we call food or tool transfer, may help chimpanzees learn to use technology to extract foods that are difficult to access,” Sánchez-Megías explained. He added that mothers serve as the primary models and instructors in this process.
The observation of tool use in chimpanzees has a long history, challenging the notion that it was once considered a defining characteristic of humanity. Charles Darwin documented chimps using stones to crack nuts as far back as 1871. However, the behavior gained widespread attention in 1960 when primatologist Jane Goodall observed a chimp named David Greybeard bending a twig, stripping its leaves, and using it to fish termites from a nest.
Goodall’s discovery prompted her mentor, Louis Leakey, to remark that scientists must now redefine “tool,” redefine “man,” or accept chimpanzees as humans. Since then, researchers have recorded numerous other instances of chimpanzee tool innovation, including crafting leaf sponges for drinking, shaping sticks to harvest algae, and sharpening rudimentary spears for hunting.
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