Hi everyone I am quite worried, one of my hens has started loosing all her feathers and I think she may be getting picked on. I know they go through a moult but is this normal? none of the others are bad, a few have their tummy feathers missing and some on their neck. I have treated for lice/mites. I am in the process of building a new coop incase it is lack of spacce but with it being winter here I am worried for this wee girl. Any advice would be appreciated, still learning here. I have added a photo so hopefully you can see.