Yeah I suspected as much (about them feeling threatened) and you are absolutely right the gift really isn't closeness it's their majestic presence, anything above and beyond is just gravy! They are after all wild animals so I would keep a respectful distance anyway. But it is nice that some of them let me watch them eat through the kitchen window

(if I crouch and don't move a lot) The ones that are the most skittish appear to be juveniles or maybe lower on the pecking order? I don't know but there's one that watches me back and seems to be the leader, I call him Muninn 'cause he's the biggest :lol
The hummers we get here are ruby throated and calliope's (once last year I think we got a rufous) but mostly ruby throated. We ended up having to separate our feeders pretty far apart because of all the fighting. This year I'm going to hang hummer houses in the old oak tree as well as planting a TON of hummer favs like salvia, sunflowers, honeysuckle and beebalm. There's a lot I'm forgetting lol. Not to mention the herbs I want to plant by the chicken run! So many plans! Lol