I bought some eggs off ebay for the first time ever. I bought 2 dozen. It has been a week and I just candled them. 7 of them are obviously not fertile. Those are the light colored ones. I can not see through the dark ones, so I feel like a lot of them aren't fertile either. I do have some that are developing from the same shipment. This was an assortment, so many different breeds of eggs. On some, all of the eggs from one breed were not fertile. This was the case on 6 of the 7 eggs. My question is this: were these not fertile when they were shipped by them being the same breed? I know they can get x rayed and stuff, but wouldn't that make them all infertile?