Sexing Cayuga Ducks

[Jhick]

I have 5 Cayuga (3 months old). I think one is a drake based on the curl on his tail, but I have another that is slightly bigger and has a yellower beak with no curl. Does beak color indicate sex?

 

[KathiQuacks]

Can you get a photo of them? Bill color can be an indicator, but I find it isn’t always the case in Black / Blue ducks.

You will also definitely be able to tell by their voices. Males will make quiet, raspy sounds, and females will make loud, defined quacks / honks.