I've noticed my frizzles and sizzles' heads have gone completely bald. There is no sores on anyone, the rest of their feathers seem normal. But their heads are completely featherless, they weren't like this a couple months ago. I haven't witnessed any bullying or even mating. Doesn't mean there isn't any when I'm not there. What should I do? They were so cute and now they're hideous!! Is this a health risk for them? I don't have pictures, I'm currently sick. I can try later.