My 4 day old d'Uccle chick has watery eyes and it doesn't seem to open its eyes as wide as the other chicks. I just looked at its eyes with magnification and it appears they are circled with ?pus or some type of film. I think it has vision as it is eating and drinking well, but doesn't seem to be as active as the other chicks. Is this something common? Do I need to have it on some antibiotic eye ointment? Any advice would be appreciated.