2 were clear on the inside, so I cracked them open and one looked like a regular egg while the other had 5 red dots in the shape of the #5 side of a dice. Not sure what to make of that. My main concern, however, are the other supposedly fertile duck eggs. I can clearly see a network of veins which is a good thing I gather...but all of them also have a thin dark ring around them, similar to the blood ring. I don't know if they are all dead or if this is normal. the veins aren't as clear in the picture, but they are there.