What is this?

[Twirea]

Hi, I've been incubating some duck eggs. They are on day 20 now. I noticed something weird when candling to check they were all still doing fine. One egg has these strange black spots floating in it and at first I thought the egg must have gone bad but there is movement. Does anyone know what this is? There's a couple in there but this is the best photo I could get.
Thanks
Twi x

 

[-Flash-]

I don't know much about ducks, but to me it sorta looks like it's very slowly developing.
Ummm, trying to think of people who know about ducks...
@MGG? @FunnyfarmMidwest? @Miss Lydia?

 

[MGG]

Hi, I've been incubating some duck eggs. They are on day 20 now. I noticed something weird when candling to check they were all still doing fine. One egg has these strange black spots floating in it and at first I thought the egg must have gone bad but there is movement. Does anyone know what this is? There's a couple in there but this is the best photo I could get.
Thanks
Twi x

Welcome to BYC! That is actually the embryo's fecal matter. It appears like that during incubation sometimes and looks super weird, lol.
Perfectly normal.

 

[Twirea]

Thanks! It's always nice to know there's nothing to worry about haha I've incubated duck eggs a few times but this is my first time seeing this.

 

[Miss Lydia]

 

[MGG]

Thanks! It's always nice to know there's nothing to worry about haha I've incubated duck eggs a few times but this is my first time seeing this.

No problem!