WHAT MAKES HUMANS DIFFERENT?
When I was in school the fashionable theory was that humans (and primates) were different because their opposing thumbs allowed them to hold and use tools. Well now, check out this crow.
In an astonishing set of experiments, a captive female crow, confronted with a task that required a curved tool (retrieving a food-containing bucket from a vertical tube), spontaneously bent a piece of straight wire into a hooked shape -- and then repeated the behavior in nine out of ten subsequent trials.
Thanks to treehugger for the tip.
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