Intelligence: Crows are a lot smarter than we thought

They calculate, they make their own tools and practice self-discipline. Crows can do a lot of things that were originally thought only possible for humans or their closest relatives. Now they have proven their intelligence again.

Professor Nieder, how did crows shake the human throne again?
By showing their ability to do something called recursion. This means that they can recognize elements that belong together in terms of meaning but are not spatially related.

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