Okay so I have 3 female Rouens and 1 drake and 1 khaki campbell female. I'm actually not quite sure if I have 3 female rouens because I only ever see four ducks total. I think two of the females that I picked up with the male are switching off sitting on some eggs somewhere... although i can't find their nest. Sometimes I only have 3 ducks by my pond. Outside our gate is a canal also... so maybe they are going over there to lay. I just don't know anything about this. I've never had a duck lay on her eggs. For some reason my female ducks have only eaten their own eggs. Is this a strange habit? Should I make a nesting area for my girls? If so how should I make it? My drake rouen mates with the khaki campbell but every egg she lays she brakes open.