I noticed a few (About 1/4) of my quail had swollen eye lids. They do not smell, bleed, or foam. I add DE to their dust baths and keep the cages clean. It only occurs in one of their eyes and hasn’t gotten any better, worse, or spread to other birds over the last month or so. They all eat/drink well and have started laying regularly now that they are getting a few more hours of light. They don’t act ill, injured, or fight much. Any suggestions on what it might be or how to help them? I have been looking through all the Quail threads and can’t seem to find much with similar symptoms. These are the worst two.