Chimpanzees have been hurling rocks at the same trees for more than a decade

ScienceDaily
Aug 28, 2026, 9:07 am44 pts
Some chimpanzees in West Africa repeatedly throw rocks at particular trees, creating piles of stones that can remain in use for more than a decade. Researchers think this unusual behavior may be cultural and could serve as a form of communication, territorial signaling, or something more symbolic. Camera traps…

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