Update-- today is the 3rd day of reintegration and it's all gone really well. She is vigorous, and has consistently asserted herself. Sometimes she just randomly runs over to assert herself, I guess once she got beaten up, it made her hyper focused on making sure no one felt like they can mess with her.
The first couple nights she slept with the others on top of the cage. I've been staying in the coop from dust til it's truly dark just to make sure they are all settled. Last night I went back after a couple hours, and moved them all to a roost. Not the highest, not the lowest. The middle one. I'm going to do this each night til they learn to roost. I will remove the cage from their half of the coop tomorrow, after two nights of placing them.
The dummies still want to try to roost on the metal divider panels-- literally the metal top bar is about 1/8" and there is netting zip tied to it, making the barrier to the ceiling, so it should not seem appealing.
I'd like to train them to roost on "their side" of the coop before full integration.
There has been zero hostility through the dividing fences inside or outside, but I feel like I should let this go at least a week without incident before full integration. I've got another 4 days of nice weather, then two days of rain (so they will have more coop time from one afternoon through midday the next day-- need to leave them in since the divided run fails to offer a roof for the 5 month old group, or I can reconfigure the dividers but that is a HUGE task given the netting and all.)
Baldy's head looks pretty good. Some of the BluKote rubbed off and left a patch of skin showing, so I had to reapply a bit. Did it without gloves even though I knew better-- I had gone to check at dusk and saw the issue, caught her quickly and did not want to return to the house to get gloves. I did learn that if you wash your skin PROMPTLY and scrub a bit, most came off. And if you use alcohol or hand sanitizer on the tough stains (thumbnail and cuticals) those will come off too! Still I will use gloves.
@Eggcessive: Is it important to continue both Neosporin AND BluKote or am I good with just BluKote at this point?
I'm so very happy that she's doing so well, and proud of her for holding her position with hens that are markedly bigger. I realize the acid test will be full integration with the 8 month old group. The fact that they did not kill her speaks to their generally good natures. I will closely supervise and if I see an 8 month old acting mean, I'll not hesitate to put her in jail. Just because they lay pretty eggs does not entitle them to be mean girls!
Will try to get updated pictures to share later today.