I noticed that my silkie's feathers were looking different on her back, but I checked and they just seemed a little sparse. Today she has a big bald patch. I have three bantam hens. They live indoors, but I try to let them out every day. I have never seen any bullying other than when I integrated the newest one in the coop. Since then everything has been quiet and I haven't seen ANY bullying. the silkie doesn't act like she's nervous, and I never hear any one squawking excessively. Is this bullying? What do I do? How do you know who's doing the bullying (though, I could take a guess) if I never actually see anyone bullying?