Any ideas what breed

[claireree]

Any ideas what breed these are or roughly how big they may get. I have had them a couple of weeks and they are growing quick. Also how old is it before you can sex them and how can I tell if they are a boy or a girl.

 

[CityChicker]

Looks just like my Grey (Mallard) Runners and Blue Fawn Runners. I think the Greys are called Mallard there. I am not sure what ducks you have over there, I think I remember you're in Europe? They might be a Rouen and Blue Fawn Rouen as well, but body type says lighter breed like a Runner to me.

 

[TK Poultry]

the head looks runner-ish to me