This BBC video shows that rooks have a remarkable aptitude for using tools.
Tests on captive birds revealed that they could craft and employ tools to solve a number of different problems.
The findings, published in the Proceedings of the National Academy of Sciences, came as a surprise as rooks do not use tools in the wild.
Here, the rook choose the appropriate stones to release a tasty snack from a trapdoor.
Wednesday, 27 May 2009
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