1-year-old Barred Plymouth Rock Laying Hen Today I noticed her eye was swollen shut on one side and she had clear bubbles on the other eye. Also her head had a horrible smell. She was eating fine when I noticed. I segregated her and didn't see those symptoms on any other hens. What is this and what can I do to heal her? Is it contagous? Should I just cull her (if I cull her is she safe to eat)?