I bought two little what i thought were rouens at the local feed store. The said thats what they were. But i have neen looking at pictures of both and now am not sure. Now this might hust beme hoping that i have mallards but i will let you guys decide. I know rouens have two stripes on their faces and mallards have one with a dot. But mine have one line through the eye and like just a little line underneath. The pictures i have seen have had tow destinct line for rouens. Is this the only way to tell them apart when they are young? Note: they both love to dive. They will submerge thamselves and swim along the bottom of the bath tub and not come up for a while. Its so cute! I know all ducks Half dive in the water to skim for food. But like i said these guys go under completely. Didnt know if this was comon in rouen or mallard. Thanks in advance for the info. Will try and gets some pics on here tomorrow or tuesday.