My 19 week old Buff Brahma has one eye shut, is lethargic, and feels warm around her head. No discharge from the eye, no wheezing, no other obvious symptoms. Also no money for a vet, but I'm not willing to ax her just yet as she is one of only four chickens we own and my son loves her. I'm willing to buy meds if I knew what to buy. I've isolated her in a box in the basement and hosed out my coop and cleaned and refilled the food and water to try to avoid infecting the other birds. Advice please!