My Americauna Drizella is about 4 months old. She started closing 1 of her eyes a few weeks ago. I thought that maybe one of the other hens had pecked it. It seems to be getting worse. My other americauna Anastasia is the same age and her comb is starting to come in nicely. Drizella has been doing a lot of mouth breathing today. She does eat and drink. She seemed to act like the others until today. Here are some pictures. I also included an image with her sister for comparison. Let me know if I need to take more pics. Please help.