Double yolked duck eggs

[Soso]

Hello!

I have two ducks (about 6 months old). One of them started laying eggs around a week ago.
I saw that all of her eggs are normal size, but double yolked. ALL of them. Today i cracked one of them and both yolks were fertile.
Is something wrong with these eggs or is it fine? Also can you hatch something out of them? I'm just curious

 

[sourland]

The eggs are fine for eating. Incubating/hatching although not impossible has a very low rate of success.

 

[Soso]

The eggs are fine for eating. Incubating/hatching although not impossible has a very low rate of success.

Thanks for info!