Black eggs!!

[duckincubation]

I have 9 mallard eggs and 3 have turned blackish like this the picture( it's not my picture but that is how they look) please help they mean everything to me

 

[muscovy joe]

I would say smell them, and if they smell like rotten eggs then they are toast and you should get them out of the incubator. they are not good to keep in there if they are rotten, I do not know too much about incubator or how eggs rot, but I have broody ducks and I pull out ones that turn black and smell bad. im sorry if that is the case and they do not make it.