I had Roo and one older hen, for a couple years. But a month ago, I introduced two new pullets to the yard. At first the older hen really moaned her disappointment, and one of the pullets slept outside for two nights. I put her in the coop the third night where they stayed from then on without problems. Now they all scratch side by side.
I got one more hen Saturday, but when I tried to introduce the darker hen to the yard, Coco, who was staying out of the coop previously, now turned on the new girl. Then the other, Lacey Girl, joined in on the abuse. Before long, the oldest hen, Morena, started pecking her too. They chased her away from the food and got angry whenever she went around Roo.
But today, Roo started attacking her too, and viciously. I put her in the run at the side of the yard, with food/water, and she was fine all day. She tried to re-enter the coop, but they all chased her out again. So I left her in the run, the others in the big yard, and blocked the doorway between the fences. All was calm until she was walking along the cyclone fence between the run & yard, scratching dirt, and Roo saw her and ran to the fence to attack her, & without slowing down, he ran straight into the fence! Lol! That's what he deserved!!
Well, she slept in the coop the last two nights, but Roo wouldn't let her stay tonight, so I put her back in the run, but it is not fully enclosed. Just a tree limp perch and cover over the top/sides. I feel bad, because it's not the normal pecking order behavior... I'm going to watch her closely.
I thought to get another couple hens to put in with her in the run, and see if they get along. I hope that after they adjust, maybe they all can be introduced to the big yard with the others. Any ideas, thoughts, suggestions, warnings, etc??