Our most beloved hen (16m old) seems to have an eye issue or illness. She is behaving mostly normal … eating and drinking and socializing as best I can tell. BUT she is keeping one eye closed. This started yesterday. It opens occasionally and appears normal. Any thoughts? I did hold her down and put some eye drops in her eye … and though it looked fine inside of her eye, I did see a little bit of goo come out when I put the drops in. FWIW, I'm in FL … it's ridiculously hot right now … in the 90s daily.