Silver Appleyard’s male or female?

[har97]

I have 4 silver Appleyard’s that are 7.5 weeks can anyone tell me what sex they are hoping I only have 1 drake but my husband thinks we have at least 2. Also anyone know what breed and sex the other 2 ducks are they came from rural king as assorted ducklings so I’m not sure what they are.

 

[3bird]

With our Appleyards, the earliest (accurate) indications we have were by the vocalizations. Our two boys sounded different.

 

[har97]

Yeah we can definitely hear a few qucking just hard to tell which it is lol do you know about when their heads turn green?

 

[3bird]

These are our guys at about seven weeks, and my wife was sure she could tell by their vocalizations by then:

This is 15 weeks, and it's clear who are drakes are by looks alone:

 

[har97]

Awesome thanks for the feedback