Causal understanding of water displacement by a crow
PLOS Media · 3 HN recommendations
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A silent PLOS ONE video of New Caledonian crows solving Aesop's Fable puzzles by dropping objects to raise water and reach food. It shows example trials from experiments testing causal understanding of water displacement.
Why HN recommends it: Used as vivid evidence of crow intelligence and animal physical reasoning in discussions of cognition.
“This video is a startling verification.of the crows mental capabilities.” Read on HN ↗