We were given 2 swedish blue's from a friend. He got them in April, and so they are 3 months old. We have a rouen and a pekin. We know their sex, pekin drakes rasp with drake feathers, and the rouen is a hen, due to the lack of green head and collar... plus, the drake mates with her like mad, and she lays eggs. So anyways..... these ducks have a different quacks than the other 2. They seem to be more like a horn? One, I'm pretty sure is a hen. She's very loud, but the other, I can't tell? Sounds loud, but the other one kind of drowns it out. The one in question, also has a "puff" of feathers on its head. Are the males "showy"? Like mallards, rouens, and mandarins? I kind of hope not (yeah, if only THAT could change my outcome!), I really only wanted hens. We already have trouble with our pekin drake. He's kind of cocky!!!