Forgive me if you already got great help, I didn't read past this message yet.
I've just recently finished the latest integration. I did shared range time and waited for the signs. Mingling and sharing water are good. Put a feeder (chick feed) out to share and see if they will share food. That's a major hurdle for some hens.
There is always a chicken or two that acts like your Orpington. It isn't their individual personality, the meanies here this time aren't even the same birds as last time (and those previous meanie hens are still here). It's whichever hens are at the bottom of the pecking order that feel the need to assert their position over the littles.
Everything will eventually simmer down. As long as no blood is being drawn, it's normal pecking order behavior. That doesn't make it easy to watch but it is a part of the process.
I put perches in the run. The youngsters especially go up for quiet time. I also installed an outdoor feeder right in the middle of the run because the littles were being chased if they were spotted "invading" the coop and that meant they couldn't eat freely. EVERYONE likes the outdoor feeder so that enabled the eating together step.
Then comes roosting together. The previous batch of chicks followed their brave leader to the adult roosts when I had everyone shut in the adult run until sunset. That was the easiest transition!
This batch, I had a deadline to meet so I had to push the last bit along. I left them until sunset and when they didn't go where they should, I put them there. Repeat. Note to self, deadlines suck. Get chicks in years we don't travel for both spring break and the end of the school year...
Good news is that they still managed even with a stiff arm push toward maturity.
I hope that you will remember the sunscreen next time.
My dad is in remission from Merkel cell carcinoma and since he has what they call an occult source (they didn't find the skin lesion, only the affected lymph node), he has a pretty high probability that it will eventually recur with a vengeance.
My kids are learning better habits than what I was raised with. Sunscreen every time and I buy the stuff with a physical barrier in it (zinc oxide or titanium dioxide) because that was what the dermatologist recommended.
I just grabbed the sunscreen bottle we used on vacation. This one is "Banana Boat SPF50 Kids Sport". Active ingredients are 4.5% titanium dioxide, 6.5% zinc oxide. We like this kind. The No-Ad version kinda sucks from an application standpoint so I spent a little more for the one we like.
Most of the physical barrier ones are labeled for babies or kids but seeing baby or kid on the label doesn't mean they aren't the all chemical kind. You have to check the ingredients. It's annoying because the packages often look VERY SIMILAR.
Thank you very much!! This is all very helpful!! Both the chicken stuff and the sunscreen stuff!! That is scary about your dad!! Hopefully he stays in remission!! I’ll definitely remember sunscreen next time. I usually actually probably put wayyyy too much on and reapply a lot but I just didn’t really think of it cause it was just a food truck festival/craft thing so I didn’t think we’d be there that long or that it would be bad. I usually remember like for the beach or boat or outdoor music festivals but figured for the food thing there’d be shade or that we wouldn’t be there that long. There was shade but also a lot of sun. I think the worst part was probably the standing in line. I think that may have done it because my back was to the sun most of the time we were there and I was just kind of standing still or moving very slowly. But it could have been any point really. Next time I will definitely try to remember sunscreen and I will try to buy that kind. Thank you.
As for the chickens, I actually cut a hole in the divider yesterday evening as they all seemed to be doing fine. Discovered this morning one of the bigs can fit through it though! The mean one.

