Smarter than a first-grader? Crows can perform as well as 7- to 10-year-olds on cause-and-effect water displacement tasks

23 julio 2014

In Aesop’s fable about the crow and the pitcher, a thirsty bird happens upon a vessel of water, but when he tries to drink from it, he finds the water level out of his reach. Not strong enough to knock over the pitcher, the bird drops pebbles into it — one at a time — until the water level rises enough for him to drink his fill. New research demonstrates the birds’ intellectual prowess may be more fact than fiction.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/ab8-NErD5zM/140723180824.htm

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