Yesterday at 11:34 PM Emilie17New Egg Hey everyone! I am quite new to hatching ducklings. I have 2 out of 6 eggs in the incubator that seem to still be alive... the 28 day mark was on Sunday (5/28), but there doesn't seem to be any sign of the hatching process. The temp has consistently been 98.5 and humidity 75-80% since day 25 (99.5* and 55-65% humidityup til that point). I don't know how long I wait before I should intervene or just call it?? 1 egg has very distinct blood vessels still, with the air sack filling only 1/3 of the egg. The other egg looks for formed and air sack is about 1/2 of the egg. Both have some movement still. Is it common for ducklings to be late hatchers?