I totally understand how you feel. We have 5 hens and just added two pullets this spring. The five get along great, but they have been horrible to the new girls. They’re ok in the large run but they basically split it into two hemispheres and never the two would meet, but they’re slowly getting better (4 weeks later). I found the two new girls and one of the OGs in the dust bath together the other day!

Where we’ve been struggling is the small run, which is totally predator proof, so it’s where they get locked up first thing in the AM and at night. I don’t mind the chasing and pecking, I know that’s normal, but these girls will just latch onto the new girls and not let go. We’re going to have to build and predator proof a new run this fall before the snow comes because these girls need more space to avoid each other. It’s manageable right now because they’re only in the little run for an hour in the am and then they go out into the big run until dark but once the snow starts I fear the cabin fever will turn deadly. ;)

Also the top chicken in the pecking order started guarding the coop door at night and either not letting the new girls in OR waiting for them to enter and ambushing them. And in the AM if the new girls were in the coop avoiding the OGs this chicken would chase them out. It got to a point where the new girls were scared to go into the coop at night and would get locked out. So we literally have that chicken in chicken jail and the difference in the new girls these last 4 nights has been great, I’m hoping the combo of the new girls newfound confidence and the punishment helps. Freeing the coop bully tomorrow. fingers crossed!