Abnormality on fertilized egg shell

[Gromstomper]

Good evening everyone,

I have a few duck eggs that are on the verge of hatching. I just put them into lockdown and while taking out the turner, I noticed one of the eggs has weird squiggly shadows on the shell.

I went ahead and candled the egg thinking it was maybe remnants and to my surprise there is a baby duck about to hatch. I am very concerned about this squiggly stuff tho and I am hoping someone can identify it and advise. Thank you.

 

[nuthatched]

It's bruising, I think, usually where a duckling is about to pip.

 

[Gromstomper]

It's bruising, I think, usually where a duckling is about to pip.

That's a relief. I was scared I ended up with some parasite in the egg!

 

[New duck mommy 2021]

Sometimes when they hit a vein while pips happen you will get bruising
Posting baby pics is a must
Can’t wait to see them