please note when the skinny tube is placed in the cage, the rook uses the SMALL stone. shoot, i don't even know if i would have done that
Clever birds rival chimpanzees in tool use
The story
Researchers have found that rooks, a member of the crow family, are capable of using and making tools despite not doing so in the wild.
Scientists from the University of Cambridge and Queen Mary University who conducted the study believe the rooks' ability to use tools are the by-product of a sophisticated form of physical intelligence..........
(ht: americablog)
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