Candled Duck Eggs Day 15.. Are they okay?

[Quacker lovah]

So we waited 2 months for ducklings to come naturally but its obviously just too darn cold out so have bought an incubator and started the process.. All was going well but today 2 of the eggs (both on day 15) have a very distinctive red rim around the whole outter occupied part of egg and the embryo wasn't dancing around as it has been 2 days previously. Do you think they are okay? Will upload pics later this evening.

 

[Orca5094]

Unfortunately, it sounds like they have died. But do upload pics if you can!

 

[Quacker lovah]

I went back to recheck the two eggs and there was no change so I decided to open one and post the result of what I saw, the other is still in the incubator although it also seems to be a goner with no movement. Will take a photo of the other egg very soon. The red area was a distinctive veined frill that I saw during candling on day 15, it went around the outside of the occupied side of egg.