The dazzling intelligence of corvids — the family that includes ravens and crows — is well-documented. Studies have suggested that corvids rival chimps in cognitive self-control. Ravens can imagine being spied on, and crows display puzzle-solving skills comparable to those of apes and human children.
Research published Friday in the journal Science adds even more evidence to the pile. Scientists from Sweden’s Lund University found that ravens appear to have the ability to plan for the future.
Cognitive zoologist Mathias Osvath and graduate student Can Kabadayi presented five ravens with a series of puzzles. First, they taught the birds how to get a food treat out of a…
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