Causal understanding of water displacement by a crow
Overview
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.
On Hacker News
Used as vivid evidence of crow intelligence and animal physical reasoning in discussions of cognition.
Topics
Sources
Video by PLOS Media, played through YouTube.
Data and selection notes
HN summaries and labels may contain AI errors. HN dates refer to discussions, not video publication.
HN Library: HackerTube export (2026-10-31) and open-index/hacker-news. Upstream summaries and classifications may contain AI errors.
Views, duration and playback status refresh separately from the published catalog. When an update fails, existing data remains visible.
Selection checks
- SaaS & AI candidates: Topic keywords do not match
- Editor-approved picks: Editorial review is required
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