Glad you were able to confirm your suspicions. Yea if you stick with it long enough you'll figure it out. I'm glad that all the ones that developed a chick actually hatched.@Chaos18
I opened the 7 unhatched eggs and found about what I thought I would; nothing even faintly resembling a developing chick in any of them. In some there was an unidentifiable brown blob; guess that was what would have been an embryo had it developed more. The one that surprised me most was the one that had shown definite embryonic movement and good veining on day 14...nothing now.
I guess you'll have this, if you stick with it long enough.