My 10 month old Buff Orpington hen has a swollen eye. It is a ring all around her eye - no goop or anything. I have a pic but cant post it? I just noticed it this morning. She seems ok otherwise and my other 15 hens seem fine. They free range during the day and are locked in the coop at night. Our weather has been extremely wet and hot. Someone recently gave us some 1 month old chicks which are in a cage inside the chicken coop so I'm a little nervous that they were carrying something. I have seen several posts with different respiratory ailments but most have other symptoms. What could this be? Thanks!