I just went out to lock the chickens up in the coop for the night and noticed that our silkie rooster has a white/yellowish discharge coming from his right eye with no swelling(yet). He doesn't have any other symptoms. He's been crowing, eating and drinking, and running around just fine. I've cleaned it out with warm water and put some VetRX on it. Do you think it's an eye injury or something more serious?