Hi all - Yesterday my mama duck was sitting on 5 eggs, 3 had a blueish cast to them. The two normal looking eggs are moving when candled, one has internally piped and I think the other has both internally and externally piped. Today one of the blueist-cast eggs had exploded rotten material all over the nest. The other two eggs with the blueish-black look are not moving, and when candled I see two air sacs in these eggs - one of the air sacs looks clear and the other kind of reddish and with dark spots. I am kind of thinking that these eggs are bad, given the dark blueish look and the funky air sacs -- and I really don't want more exploded eggs. Do these eggs sound like they are bad? I want to throw them out of the nest and let the 2 good eggs hatch, but now I'm second guessing myself. Thanks!