So I'll have Pekins Rouens and Indian runners but I don't know how'll tell the ducklings or eggs apart!!!!! I knew pekins from Rouen eggs cause the rouens laid blue eggs and of course there not little yellow bundles of fuzzy sun. How am I going to do this? Even if I separated them I let them run free range and swim in the pond they'd still 'get it on' (giggle) in the pond. I know it's mean but I don't want mixed babies! If I actually wanna sell them I gotta separate them and keep them separated >.< HOW!? HELP ME!!! Issues. I have two chain link fence enclosures that are 16 ft by 8 ft... Hmm if I kept the runners in the winter shed and the rouens and pekins in the enclosures.... Let them out on different days... Mhhh... Your opinion?