Page 109 - The Miracle Of Talking Birds

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Without any guidance, a crow named Betty, being studied in
the laboratory of Oxford University, bent a thin metal rod into a
shape that she could use as a tool. When she couldn’t reach
food at the bottom of a container with her beak, the crow bent
the end of a piece of wire she found in the laboratory into a
hook. Betty understood that the wire, an object she had never
seen before, would be useful because of its size and flexibility.
She also succeeded in bending the flexible wire in a way that
suited her purpose. Scientists pointed out that in spite of her
smaller brain, Betty demonstrated a level of intelligence higher
than chimpanzees.
http://news.bbc.co.uk/1/hi/sci/tech/2178920.stm