I know. And I know I worry too much.
My main issue at the moment is that they won't use the full roost (they are using more of it tonight than last night), and the result of that is that at least one of them (last night two) don't actually roost on the roost but on the metal bracket supporting it. The bracket is a thin flat piece of steel. It cannot be comfortable or good for their legs/keel bones long term, and in winter it will be cold.
But hopefully they will soon get over their fear of the other end of the roost and use the full length of it and not push each other off the end.
We are FAR from winter - they will be fine WELL BEFORE then! I give them less than a week to be using enough for all 5 to be on the roost proper. Besides, they are young - I don't know about you, but when I was young, tent camping, with my sleeping bag directly on the tent floor, was fun and I would wake up with no aches and pains - ready for a full day in the woods! Now, well, I would even be lucky if I could get down on the ground in a tent - never mind back up. And to sleep on the hard ground? HA! So, in this heat, cool metal probably feels good - and sleeping like that for a couple of nights will not hurt them. It would only do so if it was long term. Besides, you already said they are adjusting - last night two were on the metal brackets - tonight only one!
And, I know you are a problem solver - if they do keep roosting on the metal bracket after a few more days, you could make it more comfortable for them by wrapping it with an old hand-towel or something similar and securing it with zip-ties and/or bungies. That said, I would NOT do that for a few days, so as to encourage them to roost on the actual roost....making the bracket more comfortable should only be a measure taken if they are unwilling to adjust over the course of a week to utilizing the whole roost proper.
I know you are just a worrying momma bear, but they are smart - they will figure it out. Just like having teens. They stress you out, but when given a good upbringing and a generally good environment, most of the time they really do make good choices - they are smart enough to do so. It is usually the need to 'fit in', or the lack of being able to see long term and the wider world that causes bad decisions when all else is decent (well, and their innate sense of invincibility - but I think that is nature's way of giving them the courage to 'leave the nest') Give them the time to ;think it through' on their own, and to get comfortable with making that move. Remember - they are cautious because they are prey - they will, over time, be able to adapt once they get over that initial fear/nervousness.

You worry like a mom sending her kids out into the big, bad world. But, this is like them moving out of the house proper into the apartment over the garage - they are still under your watchful eye ,and will be okay once they adjust. Deep breath, momma bear, all will be well!


