Hi everyone! We have a few chickens and bantams, and all are well except for one bantam. We can't remember the precise breed but they look like this when healthy... This particular bird had scaly leg mite, which we successfully treated over several months with scaly leg mite sprays, vaseline, and other safe treatments. But then it started to lose head feathers and currently looks like this. She moulted last autumn, so we know what that looks like, but this is not the same. She has been bald for 1-2 months and it's getting worse, spreading slowly down its neck. Any ideas? Here is a picture of the bird now... And a close-up of its head... Thanks!