It’s been a long time since I bought a children’s book — until today. Or at least it arrived today. I heard about it on a science show, Kids book goes inside the crow’s smart bird brain, and could not resist.
Look at this:
The New Caledonian crow shapes a hooked tool to extract grubs from logs.
The damn clever thing shapes another digging tool by tapering it so that it has a thick end for holding and a pointy end for digging into crevices.
The crows here have straight beaks, not slightly curved ones, and eyes more to the front of their heads than do other species of crow. Since these traits enable a more efficient use of tools (more difficult to work them with a curved beak and harder to get the aim right with eyes further apart) it appears that tool use has favoured the evolution of these smarter crows.
If like me you want to catch up with what the kids are reading and learning, check it out….