I purchased some 18 month old hens from a local lady a couple of months ago. One of the Wyandottes, had tail feathers that looked like they were broken off at different hights and the back half of her is all downy (no mature feathers). In my ignorance, I bought her anyhow thinking that maybe she was moulting. She acts fine, lays eggs and seems otherwise in good health. None of the other hens seem to have any issues. I know that a picture would help, but I am new and can't post pictures yet. Thanks so much.