gender confussion

[trb]

Hi I have 3 crested pekin ducks. we thought we had 2 females and 1 male both females have a loud quack the one male doesn't .The male would mount both females in the pool. Recently what we thought was a female has began mounting what we think is the other female. They are a little over 5 months old. none of them have the curly feather on tail. Is there other ways to tell the gender?
thank you
Robin

 

[Miss Lydia]

Loud quack is always female and frog noise is drake. Females will mount females and males will mount males so you can’t go by that. Voice sexing is usually the best way

 

[chickens really]

Ducks are sexual and females mount females. Just normal duck behaviour..

 

[Magnolia Ducks]

Wait till you get a three stack. Ducks are funny.