A Caledonian crow making and using a hooked tool.
From the Gray / Hunter lab:
http://language.psy.auckland.ac.nz/crows/index.htmA Caledonian crow making and using a hooked tool.
From the Gray / Hunter lab:
http://language.psy.auckland.ac.nz/crows/index.htmall »A Caledonian crow making and using a hooked tool.
From the Gray / Hunter lab:
http://language.psy.auckland.ac.nz/crows/index.htm«
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