My hubby has been taking care of our 3 Columbian rockx ladies most of the winter. Last night he mentioned they looked like they have flour sprinkled on their combs. We've had a long cold snowy winter, our coop isn't heated but the water bucket was to keep it from freezing. We switched back to the hanging wsterer last night. They are all eating well and don't seem thin or sick. We get 1-2 eggs a day between the 3 so that seems normal too. We applied betadine and athletes foot cream and spray this morning. I'm a vet tech so doing treatments aren't an issue. I'm just wondering what the reinfection rate is like and what else can we do to prevent a reinfection.