I won an auction of Golden Cuckoo Marans, and I didn't want the eggs to get lonley, so added some of my own eggs. I candle with a very powerfull flashlight, but still can't see much with the Maran eggs, but I did pull 2 that I could see were clear. Of my eggs, the 2 white ones that I put in were also clear, the rest are dark, either Maran or Welsummer and the roos could be Orp, EE, or Ameraucana. I can see that the eggs are a good 3/4 dark, and can see just a bit of veins, but the light isn't stong enough to see if there is movement. Fingers crossed for babies on Fri.