(Edit) Okay, new question. If she turns out to be a he, which seems likely, That gives me one drake (Rouen) and two ducks (Cayuga and Welsh Harlequin). Is that ratio okay or should I start figuring out how to get a third female? (/edit) My Rouen was the first one to quack and did so very early. Four weeks I think. So I assumed she was female. But around six or seven weeks when the others started quacking, she stopped and went back to peeping. Now they are nine weeks and she's making raspy quacks that sound masculine. As far as I can tell she's been healthy the whole time. She does have a suspicious green sheen on her head, but I can't see any noticeable male markings yet. I'm very sure it was her quacking first. I would carry them to the bath one at a time and she would quack loudly. Does a young male duckling ever have a misleading quack like this? If anyone wants pics I'll try to take some when I get the chance. Got a few pictures. They're in the shade right now, so I don't have a picture of the sun on the head, but hopefully these help.