I know what you mean about the territorial fights by the feeder. The silly feeder has four perches by the pseudo flowers. I have never seen more than one bird on the feeder. Not even a male/female pair. Big contrast with cardinals where you will see a male/female pair on the feeder and indeed the male passing a sunflower seed to the female.
Our hummingbird feeder is about a foot from the kitchen window and they will occasionally hover and peer into the window. That's cute.