One of my bantam silver sebright hens (almost 2 years) has always had "funky" eyes. She always seems to have one closed or squinted (not a particular eye... just one or the other.) I just figured it was a odd quirk she had, because she has a lived a perfectly happy and bossy chicken life. However, I've noticed the past couple days that the front corner of her eye has bubbles in it. They aren't odd colors or smelly or gross, it just looks like her eye is really watery and formed bubbles. Both of them are doing it. I think she is still eating and drinking. She isn't lethargic or anything, but I don't think she's quite as active. (She probably can't see as well.) Any guess to what this is? I can post pictures if needed.