http://www.youtube.com/watch?v=Ny661wLDSn8
http://www.youtube.com/watch?v=fijuw...eature=related
The Corvid family (ravens, crows, magpies, jays) of birds is widely regarded as the smartest in the world.
Other than whiskeyjacks (gray jays) we only have ravens up here, and they are huge! Both are very intelligent. It's great entertainment to watch a bunch of ravens tease and torment the local dogs. Illegal to shoot them though.