This is one for the ornithologists aboard, if any. These three put on quite a display the other day, directly over my place. I had a camera, but only a 200mm lens. After I took a few frames my curiosity got the better of me and I went inside for a pair of field glasses. By the time I got back they were gone.
They were diving and swooping at each other and seemed to be making contact at times. At first I thought it was a mating competition, but when I looked at the enlarged image it looked more like two Swainson's hawks attacking a young golden eagle. I'm not a bird authority by any means, so if anyone can correct me, feel free. (Click on pic to enlarge it.)
Edit: Correction. That's a Redtail they're beating up on. I just took another look at the pic enlarged. No doubt in my mind. Two Swainsons ganging up on a Redtail.