She is a two yr. old Rhode Island Red. I only have 2 hens. They have a whole horse stall, with hay and straw for their laying boxes. Fresh pine shavings just 2 weeks ago. I'm in Kansas so it's been unusualy chilly and damp, but the have a luxury coop which is always clean and dry. They have 2 roosts one is wooden the other is a metal cattle panel, covered in carpet. Their enviroment has been the same since they came. They were probably 4 month old orphans, so I have no other history. The other hen is fine... I forgot, about 3 weeks ago someone thought they were being cute and they put a rooster in the barn with the girls, I had no idea where he came from and no one admitted to it. Could he have brought something with him. He ended up in a friends soup pot!