Fairly new to duck keeping so wanted to seek some advise from wise people! I have a 2 year old indian runner duck and recently noticed he has a build up of grease/dirt in the little pocket under his eye. Is this normal/common? He has a ridiculous amount of water sources changed daily, and also a swimming pool so it's not from lack of ability to dip his head under water.
build up under eye?
Sometimes an injury can cause an infection. If you can get a vet's help, that would be good.
Otherwise, see if you can find some antibiotic eye drops. At least begin rinsing the eye with mild saline solution three times a day - that may clear it up. Vetericyn also makes an eye ointment.
Wobbles has this issue CONSTANTLY. His right eye does get a bit weepy in intervals; likewise, the vet can't seem to find an issue. I just do a saline rinse or like Amiga said, antibiotic eyedrops. Do you have a photo? It's difficult to visualize what you describe.