Please help!! Weird thing in egg?

[studentjh55]

Hi,
There are some really dark lines in my eggs and I'm worried. Is this normal for day 23 duck eggs? I can see the ducks moving inside the eggs.

 

[cmfarm]

It is hard to tell from the picture. Sometimes duck eggs get dark spots in them though.

 

[Dr-drake]

No, I believe she's talking about these black debris pieces that be floating around in the eggs like clearly not attached to anything but the duck is alive I'm on day 23 and 4 out of five of the eggs have it and all five eggs are alive and growing well so I'm not concerned but I'm interested to see what it is when they're born