i have a leghorn about 1.5 years old she is very lethargic and i noticed one of her eyes was closed for a grew days to start, now she is very lethargic and stands alone in the coop all day. i have seen her eat and sleep but she literally fell over yesterday. Any idea what i can do to pull her out of this? i don't want her to suffer anymore she's miserable and not laying! Please help!