OldMissionChick
Songster
Have you tried candling from the air cell end down? You can make more sense of what's going on when you candle down into the egg from the big end and not from the bottom or side.
They would be fertile, just non-viable because of damage at the cellular level.
I have. But I find it difficult to hold the egg without dropping it with the flashlight on top and take a picture. Maybe I should make a cradle for pictures...