[http://youtu.be/AVaITA7eBZE] (YouTube link)You’ve seen how smart crows can be. These amazing birds use tools, they can count, they hold grudges, they like to play in the snow, and they know how to get what they wa...
https://www.neatorama.com/2014/02/10/Crow-Solves-8-stage-Puzzle/
Crow Solves 8-stage Puzzle...
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