I have a 5 month old Rhode Island hen who is being pecked at by my other three hens. The pecking only occurs while they are in the coop/run. She usually jumps up on the stick I attached to the run to avoid their beaks. She is eating, but only after the other 3 are done. They do let her drink with them without causing a fuss. When I let them loose in the afternoon, they seem to get along some what. Mainly its my older Rhode Island hen who will chase her and peck (she is not pulling out feathers). Sometimes I catch all 4 dirt bathing with no incident. I'm a little confused why the violent pecking only occurs inside the run. Is there something I can add to their food or water to maybe calm them down? The background on my 5 month old is I did have two. I bought them when they were chicks and her sister turned out to be a brother. Since I live in the city I can not have roosters and had to send him away to a farm. When he left last weekend she began to make these awful moaning sounds and this is when the pecking started. Any advise will be appreciated! Thank You My 5 month old RIR...Nellie!