I've been very tired of managing three separate groups (four, if you include some banty hatchlings) so I have been trying to integrate two groups - one group of four pullets, about 19 weeks old (still not mature, not laying) and four 10 week old pullets/one 10 week old roo. The older pullets were housed with 17 loud and crazy same-age guineas until two weeks ago so I am quite sure they were used to being the bottom of the pecking order. Anyways, I put the younger ones and the roo (who is large enough to match the older ladies) out in the run behind chicken wire so the older ladies could not get to them and just sat there for an hour or so to watch what happened. I also had done the same thing last weekend but only for two days. There was some curiosity, but my bigger girls generally ignored them. With my husband standing by with a net, I threw caution to the wind and just let them all mingle (keep in mind these were ALL hatched here and I take care of all the chickens at once so biosecurity not an issue). My biggest boss chicken, SLW pullet, immediately walked over and just pecked the neck of all the smaller ones, chased em around for a few minutes (no blood), then meandered into the coop. Every now and then she'd come back out and peck a smaller chicken and trot away. no blood drawn, etc. Only chest bumping so far is between an EE larger pullet and the roo (and roo is losing and backing off). No giant fights yet, but the younger ones still stayed together. After no blood drawn, I let them all stay in the coop overnight. The bigger girls roosted above, smaller ones slept on the floor - they hadn't started roosting yet in the barn either. They are still scared and huddle in the corner a lot, and the head chicken still decides to chase one around now and then but no prolonged fighting yet. I have multiple food and water bowls so they can't keep them from eating or drinking. I am concerned about leaving them in there (they are still only about 3/4 the size of the older pullets and seem scared- they huddle in a corner when everyone is in the coop but come out when the big ones go out) I was hoping this might work as I am trying to merge two equal size groups and the smaller chicks have a biggish roo in with them to help. So far it's working, but.. I keep thinking I'll walk out there to a bloodbath. Would I have seen signs already or is this normal when merging flocks?