My dominant hen has lots of bald patches, above and below her tail all round her bum and belly. The skin looks perfectly normal and new feathers are starting to come through, its just the amount of feathers she's lost I'm worried about. Her sisters have't lost any yet, i know they moult but is this normal, she didn't moult this much last year. I do have a male in with them and he does mate with her when he can but otherwise he's scared of her