I may be wrong but that bottom egg looks something like ours did at 10 days. We weren't sure if they were developing, so we just let them go. We put 11 eggs into the incubator and hatched 10 turkeys.
This is an interesting experiment. I'm going to follow this thread. I am planning on buying an incubator but haven't decided what type to get. I bought a few checks this year, so maybe next year. My dad would catch chicks using an incubator but I never have, so I'm hoping to learn from your...