Sexing Rouen Ducklings?

[Rocketrob]

Our Drake, Tofu and Hen Bubbles hatched 7 little Rouen ducklings back in the last week in June making them +- 5weeks old.
At what age can I start to hear a Hen quack and or see Drake tail feathers?
All they really do now is whistle......

They are getting big fast and I need to start giving them away but I want to keep one hen.

Thank you!

 

[ducklover87]

Anytime now you should start hearing a change in their voices the easiest way is to hold them until the start freaking out and want to get down. You will most always be able to get at least a quack out of one of them by doing this.

 

[Rocketrob]

Thank you ducklover87,
They start freaking out when I just get near them and Bubbles the hen will launch a full frontal assault.
Having said that I will try to grab them each and listen.
How much longer does it take for the Drakes to Quack so I do not miss my window of opportunity?

 

[ducklover87]

It really depends on the drake. It took my runner until he was abut 7 or 8 weeks old before he made any noise while I held him. He would freak out after a min or so but would never make a noise u til then. My other drakes I could tell by 6 weeks for sure.