I desperately need help figuring out what is causing some problems in my flock, and any ideas on how I can solve it. I'm including a lot of detail and some pictures in this post so it may be long, but I figure the more details I give, the better advice y'all can give. The basic problem is that one of my roosters has been attacking only one of my hens for weeks, and he's refusing to let her eat or drink at all, and she's nearly dead now. I've separated her. The only reason I waited so long was to see if it was just a flock-reorganizing thing, but I now think it's not. The details... I have eleven chickens split into two flocks. One flock consists of a bantam rooster (Georgia) and two standard hens. They're fine, no problems there. The problem is in my other flock, which consists all bantams, three roosters and five hens. In this flock, which I'll call JD's flock since JD is the leader, consists of leader JD, Alex (the rooster beating up the hen), Spearow (third rooster, who I plan to rehome), four hens who are not really involved in the problem, and Mykerion, who is the hen being beat up. Mykerion has always been the lowest-ranked bird in the flock. Right now she and the youngest hen alternate being lowest, but the other hen isn't getting picked on nearly as bad as Myk is. I've seen the difference between the way Mykerion is normally treated, and the way Alex has been treating her lately. I'm gonna go back a bit. It used to be only Alex, Mykerion and one other hen. Alex and Myk were very close then, and there was one period of time where he and the other hen attacked her for a bit, but it was over in about a week and the violence was not bad. Then I believe they were just establishing order. Alex and the other hen had five chicks last year, some in May and some in August. In May they had a son, who grew up to be much bigger than Alex. This son is JD. He took over as flock leader, when Alex previously was, and this is when Alex started picking on Mykerion a little bit, but not bad. Now JD is almost a year old. I'm explaining all this in case it's JD's taking over the flock that has made Alex aggressive. I know three roosters and five hens in a flock isn't ideal, but again, I'm re-homing one. I would really like to work out something to keep JD and Alex if possible. This seems completely different from the normal way she is picked on. Normally, the other chickens let Mykerion eat and drink last, but they're not attacking her. Alex literally spends all of his awake time chasing her. I rarely ever hold her so I didn't realize until today when I pulled her out of the pen, she's skin and bones. No fat on her body. I'm amazed she's alive. I now believe Alex must not be letting her eat at all. Her egg production has dropped from one every day to one or two a week. She has cuts all over her face, all the feathers are ripped out of the back of her neck, most feathers are gone on her head. She's got some cuts on her body that look pretty irritated. This is way beyond any hierarchy fighting I've ever seen. I'm also considering that this may be a space issue that's just now coming up, since all the chicks are just getting grown. Where I live, my chickens cannot free-range, since the woods are right behind my house and a big highway is out front. We have coyotes, foxes, snakes, weasels, possums, and raccoons, and I've lost many chickens to these predators from trying to free-range in the past. I have two pens where I'm able to keep chickens. JD's flock is in a 10 foot by 10 foot dog kennel, 100 square feet, where they've always lived. None of the chickens have ever fought over space or resources in the past, so I don't know if overcrowding is a problem now. Again, three roosters and five hens live here: Georgia and his two big hens live in a pen I built a few years ago. I don't know the measurements but it's definitely bigger than the kennel, about the same height but more floor space. (^ Couldn't get the whole thing in one picture where it was visible, so this is two halves of the whole pen.) So, with all this information, what do you all think I should do? I also want to ask, should I switch the flocks into the other pens? I've thought about this, but I don't know if 10x10 feet is too small for two huge hens and a bantam rooster, but it would be much more space for problem flock. Should I try putting her in Georgia's flock? I'm really hesitant to do this. Georgia grew up in a flock of bantams, but he snapped one day and attacked them, nearly killing all of them. He had to live alone for a long time, and now he lives with hens twice his size because they're big enough that he doesn't attack them. He's super people aggressive, so I'm afraid he too would attack Mykerion -- though he is Mykerion's father. Any and all help and advice is very hugely appreciated. I don't have space to keep any more chickens separated, so something has to be done to get Mykerion living with others again.