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beefield
on July 20, 2016
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When a crow dies, the other crows investigate the ...
I guess you mean this:
http://m.youtube.com/watch?v=AVaITA7eBZE
abruzzi
on July 20, 2016
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This is not nearly as complex a sequence, but has a bit of tool making. Specifically, bending a wire into a hook to retrieve food:
https://youtu.be/TtmLVP0HvDg
leephillips
on July 20, 2016
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That is fascinating. But notice that the researcher makes an elementary mistake: he failed to screen himself from the bird's sight.
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http://m.youtube.com/watch?v=AVaITA7eBZE