Not the best image, but I was wondering if this Duck Egg looks healthy and fertile? It is 10 days into incubation, on the 6th day I saw veins and the dark baby spot, so I know they were growing. When I checked them today I saw this blob in only half the shell. When I researched eggs, I saw the whole egg was blobbed, not half. When I turn the egg, the blob moves slowly and looks like it coats the turn, like chocolate syrup in a cup. I am wondering if they are still growing. I "think" I still see some veins, but am not positive. Thanks!