Day 27 duck Eggs

[Ducklover9878]

I started out with 13 eggs and am now down to 10. It is currently day 27 and all but one egg has pipped externally except for one who hasn't been rocking back and forth or anything. I quickly opened the incubator and candled the egg. The duckling is still moving but has not internally pipped. At this time I think I should leave it, but want to make sure I'm doing the right thing.

Thanks for any help!

 

[sourland]

Leave it, and don't open the incubator unless it regains proper humidity level rapidly.