I currently have one rooster and four hens. Started out great, now hens are picking on one of the hens, she has lost many of her feathers. It has gone as far as chasing her away from the food. Have had them for over a month this behavior has been going for the past two weeks. This has also slowed Down egg production to maybe one egg a day. Today I am getting two more hens and a rooster, not sure at this point if this will help or make things worse. I also was thinking that this hen might be I'll. And the other chickens know. Not sure what to do any ideas. Thank you.