I was so sure my ducks were drakes, and then I heard then quacking. VEry rare... maybe once or twice a day. The rest of the time they have a quite whisper that sounds drakelike. I see no drake feather yet.... (13 weeks old). I'm supposing the females aren't super loud and quack all the time.... or they are really loud males?! Can you explain a little more on the sounds you get from your females and males? I've heard a recording online... and I swear mine make both sounds though the male sounding whisper is a constant through out the day. Then alll of a sudden they'll quack at me for no reason. Its usually in the morning when I come out to feed or in the evening when they head back to the pond. Who knows!!!!