Ok what am I doing wrong, my RIR is on her way out, really labored breathing and her comb is turning whiteish, I lost my barred rock just over a month ago. I don’t know how their getting sick their coop and run is very clean and I use straw in the run and pine shaving in the coop and nesting boxes, they free range for an hour a day in the evenings and they eat kalmbach pellets 17% layer, I give them soldier fly grub snacks every couple of days as a treat….. any ideas anyone?