I have 10 rir hens and 2 roos everyone of them are losing their feathers they have been this way since around march. I have treated for mites lice and everything you can think of but still no feather regrowth. they eat 20% protein layer pellets. I have even treated them for depluming mites. but still no feather regrowth. their skin on parts of them is red but not on all of them they have lost weight. we give grass clippings 1x a week. I cannot let them free range. they are in pens plenty big enough . does anyone know what is going on with my chickens. I know some of it is roos but the roos don't mount each other and the roos are doing it too. First their feathers looke like they had be rubbed with a sos pad or steal wool then they just fell out . I have one little hen who is bald she has no feathers on her head neck or back but has feathers on her belly and a few on her bottom. I just can't figure it out. I thought at first it was moult but shouldn't they have their feathers by now? oh and they still lay their eggs out of 10 hens we ge 6-10 eggs a day I just don't know what else to do.