When do ducks quack?

[Duck_Newb]

My two Rouen ducks are on the verge of 3 weeks old now. One has started to quack, well more of an uht-uht but not exactly. I haven't been able to get a video/recording because it only does that when I'm not in a position to see them. One is female and the other male. I know the supposed male is pretty chatty especially when he slept. He would always make these peeping noises. I suppose the chatty ones quack first?

Also one is slightly wider and darker. Could that be male? Just a little worried that someone messed up the sexing. The one that's sitting is the supposed drake and the one I suspect is quacking.

 

[Flockincrazy]

My two Rouen ducks are on the verge of 3 weeks old now. One has started to quack, well more of an uht-uht but not exactly. I haven't been able to get a video/recording because it only does that when I'm not in a position to see them. One is female and the other male. I know the supposed male is pretty chatty especially when he slept. He would always make these peeping noises. I suppose the chatty ones quack first?

Also one is slightly wider and darker. Could that be male? Just a little worried that someone messed up the sexing. The one that's sitting is the supposed drake and the one I suspect is quacking.

It is probably the female male's take longer to start quacking

 

[Duck_Newb]

It is probably the female male's take longer to start quacking

That would be interesting as that one was banded as male according to my Metzer Farm's invoice.