The Counting Crows

Here's a very good video taken from TED ideas worth spreading (worth it indeed) talking about how smart crows are. You'll be surprised to see what these animals are capable of. I won't say much because the video says it all.

http://www.ted.com/index.php/talks/joshua_klein_on_the_intelligence_of_crows.html

PS: if you don't know that website, I highly recommend it: http://www.ted.com