Hi everyone, I'm new to chicken keeping having only had my two girls for a couple of weeks. The poorly one has recently starting laying every other day. They have a large coop with a large outdoor run to roam in during the day. This morning I let them out and one hen had a swollen eye and her tail feathers are down. Yesterday she played an egg as normal. She is bright and alert, eating and drinking fine. her dropping are perhaps slightly looser than normal by only marginally. I caught her and cleaned her eye with some saline solution. There is some yellow puss around the edges which I have removed. Any ideas? I wondered if the other hen had pecked her in the eye maybe.