Urban Wild,
You just made my day! This video is hysterical! Love it! I have 5 feeders around the back of my house and Ruby-throated hummers. There is aerial warfare going on continuously. It's not like I don't have flowers for them, I have two patches of cardinal flowers and two of scarlet sage as well as scarlet swamp hibiscus and black and blue. I had no idea about half of the info in the video. Great discovery!