Whoa; witnessed the mating ritual!
It's been driving me crazy since I saw this last week. I was out watering and heard this racket going on; I stopped and just stood there, baffled. My resident male was doing this unusual air show, and for the life of me, I had no clue as to what was going on. He was this diving back and forth in the shape of a widened U, almost like a swinging pendulum, right above the feeder. Once it stopped, of course I ran in for the video camera, which was pointless, since he disappeared. I didn't even think of a mating ritual since I haven't seen a female in about 2 weeks. I was just wandering the internet and stumbled upon a page in regards to this behavior. Just when I thought getting "buzzed" was mind blowing. I still haven't seen a female, which of course doesn't mean she's not out there. I have been lucky enough to have juvies at my feeders, so I'll be keeping a closer eye on the feeders ;)