info on sexing ducks

[ladyh]

This is what I found to tell the difference between male and female called venting

 

[Amiga]

If they are a little older, like a month old, the voices start changing and the females have a louder voice.

 

[Kaessa]

Just be really careful if trying to vent sex. You can seriously injure your duckling that way if you're not doing it right.