Can’t see veins in duck egg?

[Adz_k187]

Hello all, so I’ve been incubating 2 Pekin duck eggs in a still air styrofoam incubator. Today is day 6, I looked yesterday but there wasn’t much, and was amazed to see such growth in little time when I candled earlier on! On one egg I can see vines and an embryo very clearly, on the other though I cannot, which is quite worrying but I do see a black thing in the middle sometimes! Which I am assuming is the embryo, Is it normal to not be able to see veins when candling sometimes?! And if I’m able to see an embryo in the middle that means the eggs is okay right? (Pic Is of the egg I can see clearly in)

 

[Adz_k187]

Hello all, so I’ve been incubating 2 Pekin duck eggs in a still air styrofoam incubator. Today is day 6, I looked yesterday but there wasn’t much, and was amazed to see such growth in little time when I candled earlier on! On one egg I can see vines and an embryo very clearly, on the other though I cannot, which is quite worrying but I do see a black thing in the middle sometimes! Which I am assuming is the embryo, Is it normal to not be able to see veins when candling sometimes?! And if I’m able to see an embryo in the middle that means the eggs is okay right? (Pic Is of the egg I can see clearly in)

Pics of the problem egg

 

[cmfarm]

It does look like it is developing. I would candle again in a week to confirm.

 

[Adz_k187]

It does look like it is developing. I would candle again in a week to confirm.

Hello, thanks for your input, the top egg is the one I know is developing, did you mean that one or the one at the bottom?

 

[Wonder Quails]

I think it's fertile.