I havve 3 rouen drakes, that are for sure rouens. I have, what I thought was a rouen duck, but now I'm not so sure. She is not near as big as the drakes are, and she can fly fairly well. She is younger than they are, but she seems to be full grown. I don't have a very good pic of her, but she is either a mallard or a rouen. She has an orange and brown beak, if that helps. If anyone has pics of the two breeds, either together or seperate, that would be great. Thanks.