Weird thing in Yolk

[stuka123]

Hello,
When I cracked open this duck egg there was a weird grayish brown thing inside. Any thoughts on what it could be?

 

[andreanar]

Meat spot or blood spot. Sometimes happens. Gross, but totally normal.

 

[DucksOhio]

I've seen that before...my ducks just starting to lay. Perfectly harmless and will go away.

 

[Jayecookie]

eggs are basically a chicken's period if not fertilized by a rooster. Completely normal.

 

[Jacquie Button]

eggs are basically a chicken's period if not fertilized by a rooster. Completely normal.

Lol!