We have a hen - sweetest little thing ever - but she is having major foot problems and I don't know what is wrong and why it's happening! She is losing the tips of her toes - the nail and tip of the toes are turning black and falling off. It's just in her right foot. I'm not sure what to do to help her. I've read that it could be some type of mites under her scales, but I don't know. Can you see mites? She had lost her two small toe's nails (one on each foot) before she was our hen. Any ideas, suggestions are welcome! Thanks!