A surefire way to tell if it's a bad egg is to sniff it. If it's rotten, you can smell it right through the shell. That's how hens know how to kick them out of the nest. The closer the egg is to exploding, the smellier it gets.
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I'm not so sure if there is veins forming the yolk area is too dark and my flashlight might not be bright enough on the camera I just made it brighter to see if there is something inside. I'll try to wait a few more days but I think the second egg isn't developing or fertile at all I'm also going to move them to a seperate place incase they burst.
yep turns out the second egg wasn't developing and was rotten I cracked it open and the first one I'm going to leave alone because it doesn't smell or anything yet and it kinda looks like something is in there