In one of Aesop’s fables, a crow searches for water. It spies a pitcher, but the water inside is beyond its reach. So the crow begins dropping in pebbles. One by one, they displace the water, and the crow quenches its thirst. This is just one of many fascinating displays of intelligence from corvids. Katharina Brecht explores what makes this bold, brainy family of songbirds so smart.
