6. 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.7. Turn the eggs at least three times daily. Consider how many eggs you want to incubate. 2  Note that it is very rare for all of the incubated eggs to hatch and that certain species have higher viability than others. 3  You should expect about 50-75% of the fertile eggs will hatch, although it possible that this could be higher.