I actually candled a couple of eggs with cracks and they had signs of veining so I let them set but am keeping an eye on them. The others I candled with my daughters and WOW! The difference between the progressing eggs and the seemingly non-starters is dramatic. I'm sad that there is only one Cayuga doing well. One non-started (I think) and the other two are the ones with cracks. My 5 year old chose the Cayugas so I hope she gets at least one. Please send good hatching vibes our way!