For the last few days one of my roosters has a squinty eye. Its not swollen and the eye looks normal. He just has it half closed all the time. Its slightly more watery than normal, but not a lot. No bubbles. He is acting his usual self, crowing and mating. Any advise how to make the eye better? A neighbor said use cold tea bags.. but his a white bantam rooster, and I don't want to spoil his white feathers. Thanks.