Goose size egg...does this mean it's a double yolker?

[kuchchicks]

My Olive egger laid what looks like a goose egg. It is about 1.5 the size of the eggs she normally lays. I have never had a double yolker. The shell is too dark to candle. I'm considering incubating just to see. Am I asking for trouble? What's up with this size? I mean it is freakin HUGE!

 

[chicklover 1998]

it isn't a good idea to try to incubate a double yolker most don't survive, if she hasn't laid in a couple days then that could have caused it sometimes they just lay a huge egg for no reason.