I have 28 chickens and they all live in a standard sized shed that we converted into a chicken coop. There is also a run which they always have access to during the day, however, most of them stay inside the coop since we live in Central MA and we got over a foot of snow this past week so its been pretty cold. The Rhode Island Reds, which I now consider to be a gang, like to pick on my older chickens (the older ones are just 7 weeks ahead of the others) and it really pisses me off. However, it seems that Ollie has been the chicken of the week whom is being picked on. As you can see they have been pulling at her head feathers and my poor thing is baldish and ugly now! It literally is only my tougher birds that pick on certain ones such as Ollie. No one else is getting picked on like this they used to pick on my Leila whom is a Salmon Favorelle but they have moved on to Ollie now. How do I get them to stop? Do I need to seperate the mean-ish birds from Ollie and the others. I have like 7 or 8 RIR that I guess I could put in another coop but I just figure if they all stay together they will be able to stay warm better. My coop is 10 x 12 and they have plenty of room so I dont see how that could be a problem. I really think some of my chickens are just bullies! I NEED HELP! I WANT HER TOO LOOK LIKE THIS AGAIN!