Hi I have 5 hens & one has had a dirty backside for a little while, she has lost a lot of her feathers in this area too. Nothing is swollen or red & her skin is clear, but have seen white stuff on her feathers for a little while. We are currently worming them all. She is a little listless & her wattle is a bit pale, but I wouldn't say she was ill, she's running out for titbits & first out in the morning. We are thinking of giving her some natural youghurt & cooked rice - can anyone help us with any more advice please?