Duck Eggs - Black Spots

[MerryFeather]

I am incubating some duck eggs. They are on Day 17. 6 of my 7 eggs look okay and have good movement and veins. One egg has a ton of veins but looks a bit behind the others. It also has some random black or dark spots when candling that weren't there a couple days ago. I wasn't able to get a picture as I was candling quickly and getting weights. It was not the embryo making the spots. What could these dark spots be? Is that what bacteria in an egg start as?

 

[Blue Raptor]

I am incubating some duck eggs. They are on Day 17. 6 of my 7 eggs look okay and have good movement and veins. One egg has a ton of veins but looks a bit behind the others. It also has some random black or dark spots when candling that weren't there a couple days ago. I wasn't able to get a picture as I was candling quickly and getting weights. It was not the embryo making the spots. What could these dark spots be? Is that what bacteria in an egg start as?

Usually fuzzy, dark spots inside the egg means that the chick has died, but post some pictures first for confirmation.

 

[BelovedBirds]

I am incubating some duck eggs. They are on Day 17. 6 of my 7 eggs look okay and have good movement and veins. One egg has a ton of veins but looks a bit behind the others. It also has some random black or dark spots when candling that weren't there a couple days ago. I wasn't able to get a picture as I was candling quickly and getting weights. It was not the embryo making the spots. What could these dark spots be? Is that what bacteria in an egg start as?

Are the veins still looking okay, is there movement?
Could you get a photo?
Black spots are usually just debris in the egg. I had it with mine, I believe it's waste produced by the duckling during the later half of incubation. It is perfectly healthy. A photo would help me to confirm that your duckling is alright, but this sounds normal to me. It does not mean the baby is dead.

 

[MerryFeather]

Are the veins still looking okay, is there movement?
Could you get a photo?
Black spots are usually just debris in the egg. I had it with mine, I believe it's waste produced by the duckling during the later half of incubation. It is perfectly healthy. A photo would help me to confirm that your duckling is alright, but this sounds normal to me. It does not mean the baby is dead.

The embryo was behind the others and the veins ended up slowly going away over the next 2 days. It was gone two days after I noticed the black spots.

 

[BelovedBirds]

The embryo was behind the others and the veins ended up slowly going away over the next 2 days. It was gone two days after I noticed the black spots.

Sorry to hear that!
I don't think it was related, but it can be hard to tell exactly what is going on inside the egg. Doesn't sound like it was healthy, with being behind and everything.