Ducklings still haven't quacked in 9 weeks, they were supposed to be female, are they?

[Celeeste]

We paid for 4 female duckling and our two anconas have been quacking for a while while our mallard and cayuga are making a weird noise. They're 9 weeks old now. Could they be late to the quack game or are they Drakes? We got a rooster from a group that was supposed to be all pullets so I wouldn't be surprised. If so we might have to get rid of one so it doesn't breed with our chickens or fight

Mallard:

Cayuga:

 

[HuffleClaw]

Drakes

 

[Flockincrazy]

We paid for 4 female duckling and our two anconas have been quacking for a while while our mallard and cayuga are making a weird noise. They're 9 weeks old now. Could they be late to the quack game or are they Drakes? We got a rooster from a group that was supposed to be all pullets so I wouldn't be surprised. If so we might have to get rid of one so it doesn't breed with our chickens or fight

Mallard:

Cayuga:

Those sound live beginner quacks to me they will get more normal just give them a chance