Ok I have 9 chickens and one of them, the white leghorn has a matted looking butt. It looks as if her feathers are wet and matted around her butt. The other nine don't have this. They are all about 5 months old and have never laid an egg except the lehorn. She laid one egg and hasn't laid since. Also they all got very cold a few nights ago before I could lock them up in there pin. I don't know what it is but it dosent look good. She seems fine except for the matted butt. No drainage or anything around her eyes. Does anyone know what this is??