American Crows: How Smart Are They?

Most of us know what an American Crow looks like.  However did you know that the American Crow is very unique in its brain function?  Studies have shown the crows ability to count and solve puzzles and retain information.  The crows will often travel in a flock.  The crows will often take turns on sentry duty while other crows eat anything they can find.  The one on sentry duty will serve as a lookout for any trouble.  The crow picture is below courtesy of google images.