My friend who owns a farm owns a bunch of ducks. But has no idea what gender any of them are. they are all about a year old now. most of them are crested ducks. Then I think they have one female mallard duck. They also have a couple of black ducks (no idea what breed they are) But anyways since some of them are laying eggs, I was just wonder what the chances were of them being fertile. Since I was thinking about maybe trying to hatch some of them.