Possible ducks egg- help with understanding the incubation process.

[Luv Ducks]

Good job for rescuing them! If the humidity isn’t working, I would mist them or put a damp towel in the incubator with them. Incubate them for a couple days, and if you see no visible development, then toss them. Good luck and keep us updated! Also welcome to BYC!

They take 28 days at least to hatch so it may be hard to tell at this point if they are alright or not. I would just hang in there until I was absolutely sure they are dead before giving up. Good luck.