You have a 3 page thread already. Looks like you are getting good suggestions there.
If possible, seeking vet care is always best.
https://www.backyardchickens.com/threads/what-is-wrong-with-my-chicken.1511509/
If possible, seeking vet care is always best.
https://www.backyardchickens.com/threads/what-is-wrong-with-my-chicken.1511509/