I took video of our fighting hummingbirds, and I tried to upload a short clip. The clip looks really dotty though, so I don't know how well you're going to be able to see anything. How do people get long clips uploaded that are nice and clear? I had to cut my video down to 43 seconds.
The hummingbirds are alot of fun to watch this time of year. The babies have left their nests and are out claiming territory. They don't like to share and each one has it's favorite feeder that they hide nearby and watch, and they don't let any others near. They dive bomb at each other and chirp like mad. We saw one sitting on the window feeder and another one came right up and grabbed some feathers on the top of it's head! Hummingbirds are tough man.