Candling - ?? non-start - blood rings?

[kwack]

Of 13 eggs shipped, six have great veins and are moving - WOOHOO! SO COOL! Three look like non-starters, two look to have blood rings and two had a network of little cracks:

 

[4-H chicken mom]

Great pictures. Yes that top egg doesn't have anything going on like the second egg. How far along are they? Good luck with hatching!!