Bending of a hook into wire to fish for the handle of a basket by crow Betty 15 years ago stunned the scientific world. Cognitive biologists studied tool making in an Indonesian cockatoo. Other than ...
The bending of a hook into wire to fish for the handle of a basket is surprisingly challenging for young children under eight years of age. Now cognitive biologists and comparative psychologists from ...
Cognitive biologists and comparative psychologists have just studied hook tool making in a non-human primate species -- the orangutan. To the researchers' surprise the apes spontaneously manufactured ...
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