Urgent! My duck eggs are 24 hours in lockdown and as I have no idea of the time they will take, quickly candled a couple this eveniing. The air cells seem to be massive, one is from end to end of the egg. It is obviously serperating from the shell membrane. Ducks are all still live, plenty of movement. I am tempted to open one shell to see what is going on - humidity is plenty high enough, but I really don't want to lose these to shrink wrapping. I am still maybe 2 days from hatch date, but am confident that they will probably go early anyway, they are mutt eggs and have seemed large for date all through incubation. Is it worth opening the really huge air celled one?