I did a search for squinting hens and it seems as though respiratory infection is the usual culprit? How long would that take to show other symptoms? Or for any of the other girls to get sick. When we first brought her home she was squinting, I assumed she got pecked during transport or something. The next day she seemed fine, so I forgot about it. The got in a tussle with our rooster about a week later and went and hid under a very thorny weed and when I picked her up, she had it closed again. Was thinking maybe the rooster got her or the weed she was under. Next day she seemed okay again. Today, it's squinting again, not sure what may have caused it this time. She seems totally fine otherwise. Eating, drinking, bathing, wandering and the usual. No sneezing from her or any of the others. No discharge or foaming from her eye. No foul odors. No one else is squinting either. Any ideas why she may be squinting? I'm thinking if it had been a respiratory infection it would have shown other symptoms by now?