My two ducks are about 5-6 months old. You guys have helped me out and said I have two girls! But I am recently starting to think that may be wrong. My Cayuga has been starting to get on top of my welsh harlequin. My Cayuga will "bite" her neck and it almost looks like they are trying to mate? My Cayuga has a hens voice and doesn't have the curved tail..? Soooo? I don't know? Is it normal? They haven't started laying yet either.