Wow, these birds don't have much of a glidewing- flapping all the time. That's very impressive.
A few years ago we had about ten hummers drinking from our feeder. That was when I noticed their flying antics. We had one big feller sitting on a volleyball net just outside my kitchen window every morning who'd look left and right (180 degrees) for un-wanted 'feeders'.
He'd let some of the tiny ones feed, but would run-off others in a way that would be the envy any fighter pilot. Little Blue Angels, really. Their areobatics are, though extremely fast, quite impressive- nothing else like it.
I don’t think they can glide. At less than a quarter ounce weight air drag may exceed inertia, they would just stall out. The wingbeat is about 25 strokes a second. I’ve caught some wild wing positions in photos, they can go from ahead fast to reverse instantly. You never see accelleration, they are sitting, and then, hauling tail, it just happens NOW, no in between. If you have competition at the feeder, add another feeder with just a tiny bit more sugar. They can detect the sugar level and the dominant males will go to the richest sugar supply.