I have 8 red star hens that are going on 20 weeks. We got them at 17 weeks. The only problem I've noticed with them is runny stool. This problem seemed to have been clearing up on it's own. The last few days I have only been seeing one or two spots of runny stool in the coop/run. They are eaing Layena by Purina. I did give them just a little scratch feed to entertain them yesterday. This morning the runny stool is back. Is this just the result of them adjusting to different feeds? Is there anything I should do? The more urgent question is about one specific hen. While I was watching them this morning this one hen went to the bathroom twice, normal the first time, runny the second. She then continued to try to go to the bathroom, with no success. I also noticed a balloon-like red protrusion from her rear end when she was trying to go. Is this a result of straining too hard? Is it a serious concern? Is there anything I can do? I'm waiting for a call back from the local vet (actually the only local vet seeing as how I live on an island). I'm not sure how much he knows about chickens.