My EE (about 7 years old) has a swollen face, one eye swollen shut and a bit gummy. Both sides of her face seem pale and swollen, but no other issues. She does have a few mites (we dusted her and the coop with poultry dust) and we used warm water on a cotton ball to try to clear up the closed eye. We were able to get it a little open, the eye seems clear but she’s keeping her second eyelid over the eye. In general, she doesn’t seem down. She’s eating and socializing, drinking without issues. I added vitamins to their water as well just to help boost their systems. We have 4 in the flock, and a history with Mareks. This bird was one of two survivors of the Mareks outbreak, and it’s been over a year since the last one died. Any thoughts on what is causing the swelling? Note: she hasn’t laid since last fall, I think she is past that stage in her life maybe.