how much humidity do chicken eggs need
Temperature: The eggs need to be kept at 99.5 degrees at all times; just one degree higher or lower for a few hours can terminate the embryo. Humidity: 40 to 50 percent humidity must be maintained for the first 18 days; 65 to 75 percent humidity is needed for the final days before hatching.othering chicken eggs is not for everyone, but if you think it might be your calling, hereâs how to do it. Once a hen lays a clutch of eggs, instincts take over. They constantly fuss over them, adjusting them just so throughout the day and rarely leaving the nest for more than a few minutes.