Lol... There is nothing wrong with rouens!! They are amazingly friendly birds, the are flightless so the never will fly away. The look lie overgrown mallards. They are funny, have great personalities, and are big babies..
There is only one big problem that I see with yours.. They aren't mine.
I have been trying to decide for three weeks, I was leaning rouen, now with these post and the growth of mine I believe they are. I'm pleased, hopefully we can keep the rouens around the house, whereas mallards may leave.