I am relatively new to having chickens (my second year) so perhaps this is an easy one for you experienced ones
What's wrong with her feathers? All that remains of the feathers on her back is a little bit of fluff and the two spots you see on her wings (same spot on both sides) is now covered in no-peck because they are bald. I recall once before that her feathers on her back looked fuzzy (not as bad as this!) but it went away so I didn't think much of it. She is the only one of our group of 13. I looked at her skin and it really just looks like dust/dirt from dirt baths. Nothing creepy crawly looking. Help!

