Watch Cockatoos Solve an Intricate Puzzle, Step by Step

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July 8 2013 3:30 PM

Watch Cockatoos Solve an Intricate Puzzle, Step by Step

The Indonesian birds could see a nut behind a transparent door, but to get to it, they had to remove a pin, a screw, and a bolt; turn a wheel 90 degrees; and shift a latch sideways.