One of my 4 week old duckling starting "tearing". The clear droplets were oily, and would dry up and leave a sticky crust around my duckling's eye. I began to see the same thing in my other duckling's eye but it is not as severe and does not leave a prominent crusty dry area around the eye. I give them a warm bath every day, and their water bowls are deep enough to dunk there head in. I would drop contact solution into the eyes on the first duckling, and fill their water bowl with apple cider vinegar, but it doesn't seem to work. Both their eyes are quite red, and I have no idea what to do. The first duckling was sick originally and I'm scared that might have spread to the other duckling. I have them separated for now. Please help!