Hello everyone and thank you for taking time to look at and answer my post. I have 5 chickens (4 hens 1 roo) two of them have pale faces combs and waddles they are bantam cochins the roo is also a bantam cochin but he is just fine with color my other two hens hav fine color two, All of them had a respitorie disease last year i used a antibiotic and it took care of the symptoms quickly but im sure they still have it its just dorment cause the bamams still sneeze like they usd to a couple times a day. Im feeding them all purina starter/grower and some oyter shells once a day. Im thinking maybe its a deficiency of some sort but i dont know the affected hens are eating and drinking well and there poop looks normal. I plan on switching them to a organic layer feed so maybe that might help? I do have a pic of when they had normal coloration but i dont have one after so ill look for a similar picture. Thanks so much i need help. The top two hens in this photo are the ones im speaking about this is when they were normal. And this is a what they look like now (this is not them just a photo i found that looks like how they are now.