Place the eggs in the egg tray of the egg incubator, with the larger end facing up and the narrow end facing down in the incubator. Set the temperature to 100.5 degrees Fahrenheit with 50-55 percent humidity.
Pores in the shell allow for the exchange of gases as the embryo develops, and also for the exchange of moisture between the embryo and the air in the incubator itself.
Evaporation is the process by which water changes from a liquid to a gas. Moisture will move from an area of higher concentration, such as the contents of the egg, to an area of lesser concentration, the air surrounding it. Higher temperatures increase the rate at which evaporation occurs. So the comparatively high temperatures in the incubator are a perfect place for evaporation to occur. This is why keeping humidity at the proper level during incubation is so critical, no matter what type of incubator you are using.
