In 4 hours it will be day 29 for my duck eggs. 8 of 11 have hatched so far, pretty sure one of the eggs is dead because I haven’t seen movement from it in a week or so. The other two unhatched eggs have not externally pipped, not sure if they have internally pipped. Is it possible to candle them without disturbing or harming the 8 ducklings in the brooder? I can’t candle the eggs without opening the brooder and I don’t want to chill them or shrink wrap the eggs, but am a little worried they might run out of air in their shells or that they might be having trouble getting out. I can’t tell if the eggs are peeping or not because the ducklings are peeping as well.