Adventures with Hummingbirds

I finally set up my hummingbird feeder.
After a few days, one hummingbird discovered it and seemed to like it.
Then her spouse showed up.
Gradually other hummingbirds discovered it and suddenly there was a big hummingbird fight. Much spreading of tail feathers and slowing down of their wings so they can be seen, in order to seem larger than the others. Much ducking in and out.  The first hummingbirds tried to defend the feeder doing the same.
Much twittering.
Much shaking of my head.  Stupid birds.  There are four feeding access points.  You all could share.  But NO.  Duck. Twitter. Defend.
Nowadays, the usual hummingbirds come, settle down on the perch and feed, occasionally backing up to check for danger around them.
I can tell when it's not a 'usual' hummingbird because that bird doesn't perch and take its time. It will keep its wings fluttering almost invisible, ducking in and out of the feeding area, keeping lookout for other hummingbirds and other danger.
This feeder is right outside my kitchen window and I can watch them while I eat in the dining nook.