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8. Adjust the humidity levels in the incubator. Humidity should be around 45 to 50 percent throughout incubation, except during the last three days when you will want to raise it to 65 percent. You may need higher or lower humidity levels depending on the type of eggs you wish to hatch.. Record the day and how many eggs you've incubated on a calendar. You should be able to estimate your hatch date based on average incubation times for the bird species you want to hatch. For example, chicken eggs typically take 21 days to hatch, whereas many duck varieties and peafowl may take 28 days.
You don't spritz the eggs and you keep temp and humidity the same during incubation. When you set them to hatch (lockdown) you'll need higher humidity, around 65%. But NOT during incubation, you just keep them wherever you keep your chicken eggs. Mallard ducks take about 26 days to hatch.Using the turner is fine.ave looked at info on this site on incubating duck eggs and still confused:: what humidity should i use? can i use the egg turner? do i spritz the eggs daily? what is the incubation period for mallard eggs? thanks. Reply. Reply. post #2 of 33. 3/19/11 at 9:04pm.