I have 2 hens, both going on 16 months old. The submissive one of the two decided to start moulting a week ago, feathers are everywhere and she's starting to look pathetic. Just this morning she decided to start periodically attacking her alpha sister. This is the first time I've seen them have any sort of squabble. Does moulting make a hen cranky? Any advice on how to restore the peace? Thanks!