My blue silkie, Alf, is almost all feathered out. I fed them a hard boiled egg, and ever since that, I have been finding semi-transparent, white flakes all through his feathers. It might be on the others, but he is the darkest and I can see them the best on him. Is it dandruff? Mites or lice? Was it from the egg? It's just wierd picking it out.