I have 18 hens that are 1 year old. I had been getting 15 eggs average. now I'm getting 1 egg a day. the hens are missing the feathers on their back (rough roosters) and I started feeding them pea and barley fodder. they've started growing new feathers on their bare backs now since I fed the fodder. is the reduced laying just the feathers growing back. Please any advice is appreciated.