I'm fairly new to ducks, I only got them about a year ago and ordered all females, and surprisingly did get all girls! So I don't have any personal experience with males.Thanks. When will I see a difference to tell males and females? 7-8 weeks?
But at 7-8 weeks you should be able to tell by voice. Females have more of a loud quack and males are raspy. I took this video of my duck's voices so it should help you. All are girls.
At around 12 weeks I believe, drake could start getting a drake curl on their tail. I also believe most breeds of drakes get that "ring" around their neck where the girls typically don't get that as much. I know my Buff girls are completely solid in color and the boys have that ring around their neck.