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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.
What temperature do you need to incubate chicken eggs?   101.5 in a still air incubator 99.5 in a forced air incubator Also important For the first 18 days the humidity should be 50%-60%ish and the eggs should be turned â¦ an odd number of times, at least three.For the last three days the humidity should be about 65%-70%, and the eggs should not be turned.Josie.If you have a thermometer-about 100 degrees F is good.) Roll the eggs each day using m â¦ oist fingers (this provides the small amount of humidity required.) Chicken Eggs take approximately 21 days to hatch.