The Conversation Canada
📰 The Conversation (academic)
Jun 2, 2026
· 6 min read
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Why do male chimpanzees throw rocks at the same trees for more than a decade? We travelled to remote Guinea-Bissau to find out
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Article Excerpt
Accumulative stone throwing is a rare, potentially cultural, behaviour that has been observed among four groups of wild chimpanzees in West Africa. (Wikimedia Commons), CC BY-SA
Why do male chimpanzees throw rocks at the same trees for more than a decade? We travelled to remote Guinea‑Bissau to find out
Published: June 2, 2026 12.50pm EDT
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Walking through the savanna-woodland landscape of Boé National Park, Guinea-Bissau, you might encounter a tree covered in gnarled scars, with an accumulation of rocks surrounding its base.
The chimpanzees may have left the area…
Read full article at The Conversation Canada ↗
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