Okay - new babies, hatched Saturday. This one, the one I'm worried about? Last one out, Sunday morning. Is completely dry. Has been rinsed off in warm water, once, but still feels ... stiff and crunchy. Do I wash again? With a soft-bristle toothbrush, maybe? I've had to peel a hardened strand of membrane off a chick's back before, but this is ... not that. Advice, please?