I have one RIR that is a GREAT egg layer. Since she has always put so much energy into this, she has never been the prettiest bird (how it almost always works out). I just noticed when I got back from a 3 day trip that her back had almost no feathers. It had always been really ragged, but no there is nothing. I don't think she gets a lot of attention from the roosters, so I don't know what caused this. She is not molting either. I put her in a separate pen and I'm currently feeding her 25 scratch/75 layer. Is there anything I can give her to promote feather growth. I appreciate it!