I only noticed the problem yesterday when I saw she had a bald patch on her neck. Then I looked at her more closely and realized her neck feathers had really thinned out all around her neck. I thought about molting, but the timing is weird. She is only 10 months old and it’s January. I thought about feather picking but the skin doesn’t look irritated like she has been plucked, more like the feathers fell out or broke off? Then I used the poultry medicine book my dad loaned me to look up conditions associated with feather loss/damage and that led me to bugs. Pulled her off the roost at night and discovered her vent area was covered in lice

I know they don’t cause feather damage directly but I thought maybe constantly twisting around to preen and bite at herself she might have rubbed off/ broken her feathers over time?
Does that seem plausible? Or should I be worried there is another problem?