Duck egg?

[Cluck Cluck Farmer]

I bought some chicken eggs off of Ebay, and received some extra... I ordered 2 blue eggs, but received 3. The unmarked 3rd, was about the same color as the other 2, but a little bigger.
I incubated them... One died within the first week, one hatched, and today - day 24, I candled the larger egg, and saw movement.
I'm beginning to wonder if it is a duck egg... I have no experience with ducks... I stopped turning it on day 18.
If it is a duck egg, should I start turning it again? Any suggestions?

 

[ExoticPetOwner]

Ducks do not lay blue eggs, they can only lay white, black/gray, or green. ( Some eggs may appear blue but it won't be a true blue color. It's usually a lighter green. ) What do the eggs look like? Some chickens lay larger eggs than normal, and sometimes they take longer to hatch.

 

[Cluck Cluck Farmer]

Ducks do not lay blue eggs, they can only lay white, black/gray, or green. ( Some eggs may appear blue but it won't be a true blue color. It's usually a lighter green. ) What do the eggs look like? Some chickens lay larger eggs than normal, and sometimes they take longer to hatch.

Maybe that's the case... I'm hoping it's just a slow to hatch chicken egg...
I candled one more time to make sure it wasn't just settling, and there was a definite swipe...