Crows as Clever as Great Apes, Study Says - http://news.nationalgeographic.com/news/...
There have been similar experimental tests done with crows, all with similar results. Crows have also been seen to use various 'tools' in the wild. It would seem they are quite intelligent, and reasoning. Other birds have also shown evidence of reasoning intelligence.
https://www.youtube.com/watch?feature=player_embedded&v=AVaITA7eBZE
