Mites? Lice? Or something else?

[ChickenTenderCT]

My 2 year old white leghorn hen Connie has been having substantial feather loss on both sides of her neck, not related to molting. It started over a month ago, so we switched to a higher protein food (18%). The area of feather loss has gotten larger so we treated with both Sevin dust and DE. However, the feather loss just seems to continue. She is otherwise eating and laying well. The other 5 hens in our flock do not have any such feather loss. Any idea what it could be? How long would it take the feathers to grow back? Thanks

 

[Stipenvlerk]

Hi @ChickenTenderCT I would indeed first check if she has lice or mites.

welcome to BYC