My Khaki Campbells are about 14 weeks old now. A few days ago I found a large white egg in their pen, but don't know for certain who laid it. On that day I hadn't let the other hens out of their pens, and the egg was too large for any of the bantams, who sometimes flip over the fences, to have laid. The egg is more round than oval, and has a texture to the shell that is more rough than smooth. I thought duck eggs were almost waxy feeling. I haven't yet had the chance to open it, to see what color the yolk is. Are duck eggs' yolks more orange-y than yellow? And since that day, there haven't been any more eggs like that in the duck pen. What do you think?