Here's the back story - I started my chicken experience almost 2 years ago with two BR and two EE hens. The boss hen turned out to be one of the BR's, and the other BR was second-in-command. Boss hen was a benevolent dictator and everyone seemed happy. Unfortunately she got sick earlier this year and is no longer with us. Second-in-command BR took over as leader of the flock, but she's always been outright mean where the other one was just bossy. Still all three seemed to be getting along ok. Fast-forward to the past week. Both EE's have completed their molts and are looking glamorous, BR just started molting and is pretty raggy looking right now. BR has, in the last few days, become outright nasty to the other two hens. She charges them for no reason, chases them from one end of the run to the other, and if she even looks at them now they scream and run away. They're so on edge that she's keeping them away from the feeders and interrupting them when they're scratching for snacks. In addition, her eggs have come to all have very thin shells, in spite of constant oyster shell and layer feed. Most times they break as she lays them, and then she eats them, so many days I don't even see them . . . but when I do find them they're nearly unusable. The thin eggshell thing has been going on for at least three months at this point (and strangely she's still laying even though she's molting). So here's the dilemma - I'm somewhat tempted to get rid of her. She's making the other two miserable, she's not producing eggs (and eating those she does lay). But I feel like a horrible person if I cull her simply because her personality stinks. I don't have the room or facilities to keep her separated from them for more than a few hours (which I tried but it didn't change her behavior). I can't be with them 24/7 to mediate (she doesn't pull this behavior when I'm in the run with them). I've never seen the other two so freaked out as they've been lately - they're clearly not able to relax around her. Is the happiness of the other two birds a good reason to eliminate her from the group? I'm thinking yes . . . but if there's another solution I'm all ears.