Hi! I have two Rouen ducks and one Peking. The white one is a girl, but the Rouens I don't know. We get two eggs a day (a white one from Al the Peking duck and a greenish-white one from one of the others, Archie or Esther). My brother thinks they're both girls, and that Esther, the smaller Rouen, is just a runt. The rest of us think not, and could use some help determining their genders! Any help would be appreciated. Thanks!