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1 You must not turn the eggs once they have been in the incubator for more than 16 days. 2  Donât open the incubator if you donât have anything important to place inside. 3  The chick obtained beyond 22 days are usually unhealthy.
Chicken eggs have an incubation period of about 21 days and can be hatched using either a specialized incubator under carefully monitored conditions, or using a broody hen. Use these tips for hatching chicken eggs using both methods.ecide whether to use an incubator or a broody hen. You have two options once you've decided to hatch chicken eggs; you can hatch them in an incubator or hatch them under a broody hen. Both options have pros and cons that you will need to consider before proceeding.