Woohoo! Just candled all 41 hatching eggs and I only marked 5 as questionable. The others look to be developing well at this point, many with obvious eyes, heart beats, even silhouettes of the chick inside moving in reaction to the light of the candler. Exciting! I left the questionable eggs in for a few more days. It should be very obvious soon whether it is a slow starter or a non-starter I think. Tonight was day 10 for batch 1 and day 7 for batch 2. So far my first hatch is going well. 2 of the questionable ones had what looked like blood rings to me. And 2 others were so dark I just couldn't be sure what I saw - couldn't even mark air cells.