Someone please help!! My easter egger has this weird white stuff on her head. I can just rub it off and it flakes away like dandruff but just can't get it all, more and more just keeps coming. I can't see any type of lice or mites in her feathers and she does pick at herself a lot. My other easter egger is getting it too but can't see any of it on my other 6 chickens. Should I quarantine her? She is about 2 years old and free ranges. I noticed her feet look particularly scaly but don't seem to be sensitive to the touch. Someone please help.