Ok, going out on a limb now but I hatched some eggs last spring using an incubator and after about 5 days I saw veins going all through the eggs. It was exciting and vivid. I don't see anything here but I was hatching Indian runners. Maybe it's different with khaki's?
Mama Duck is not mama duck. She was sitting on infertile eggs and they all turned rotten. SO, we removed everything including the nest, the eggs (yes we checked them) and now Mama Duck is not broody anymore either. We will probably try not collecting in spring time instead.