I see a lot of pics with really nice looking birds, most have nice bright red faces. mine do not.. im wondering if they are missing something in their diet? they are pretty healthy but have kinda a flakey thing going on there cambs and waddles.. whats up with that? ETA : they are all laying and are on layer food. get treats, oyster shell and are spoiled with lots of fresh stuff from the garden and kitchen.. was wondering if maybe it could be mites or somethig?