Unfertilized egg? Guinea Fowl Day 12

[envious]

I recently bought some guinea fowl eggs from a local person. It's Day 12 now, and I'm not seeing much development. I heard it takes longer, but I'm a little worried because I don't see any progress. I'm hoping someone more familiar can tell me how a Day 12 egg should look like.

 

[nuthatched]

It's infertile.

 

[envious]

It's infertile.

Damn... the eggs all look like that, guess I got unlucky and had a really bad batch from them. Thanks.