already posted this under ducks but due to lack of responses & my anxious need for an answer thought I would put it here! ANY help is appreciated! We have been incubating duck eggs for quite some time and estimate them to be around day 26 (?) on one and a bit behind on the other 4 eggs. Day 26 egg made a crack in the egg that we noticed Wednesday night. A more of a pip, I assume, appeared at about 12 yesterday. Yesterday night, about 6, it appeared he had begun zipping, with more of a holes forming a circle. However, it is not clear if he is all the way through the egg yet and I do not want to open the incubator to inspect. Since last night we have not visually seen any more progress and he has not been chirping. Is this normal behavior??