I have four khaki campbells and one pekin, all four weeks old. Two of them are not squeaking anymore, but they aren't quacking like any quack I've ever heard, either. They're just sounding like....uh, I hate trying to describe sounds, lol...sounding like when you push your finger down and slide it across wet metal and it makes that noise. I thought I'd be able to tell sexes soon based on their voices, but I can't tell if that noise counts as a quack or a rasp. lol What *is* that?