Humidity for hatching duck eggs varies based on the species and the number of days required for incubation. The general rule is that higher humidity levels are required during the first half of incubation and lower levels are required during the last half. This pattern supports the development of a healthy embryo and a strong chick.
Duck eggs require higher humidity than chicken eggs. For hatching duck eggs, there should be at least 50% relative humidity (RH) within the incubator and 65% RH in the hatcher (where the chicks will spend their last three days before emerging). The most important factors that influence humidity are ventilation, temperature, and water supply. Incubators with large air-exchange systems, such as forced-air models, require lower humidity than still-air models do.
Humidity is an essential component of egg incubation. The eggs need to be kept in a humid environment throughout the incubation period. If the humidity is too low, the eggs will dry out and the embryo will die. If it’s too high, excessive moisture will condense on the shell, which can lead to bacterial growth and death of the embryo.
The optimum amount of moisture for hatching duck eggs is between 55% and 75%, with 65% being ideal. Maintaining this level of humidity can be done by adding water to your incubator’s tray or by using a wet sponge inside your incubator.
Humidity is a key part of hatching duck eggs. If you’re interested in incubating your own duck eggs, you should have a basic understanding of what humidity is, how it affects the hatching process, and how to control humidity levels in your incubator.Strictly speaking, humidity is the amount of moisture present in the air. It’s measured as a percentage; if there’s a lot of moisture in the air then the humidity level will be high. You may also hear people refer to humidity as “humid.”The reason we’re concerned with humidity when incubating duck eggs is that eggs need water to hatch. Ducks get this water from inside their shells (and from other sources such as food and water).
That water is released into the air through pores in the shell. Since ducks are birds who live near or on water, they need a fairly high level of humidity to survive: between 70% and 80%.But what about all those eggs you see at grocery stores? They aren’t kept in humid environments—they’re kept refrigerated in cardboard boxes! That’s because they’re not fertilized. Fertilized duck eggs are different than unfertilized ones because they contain all the genetic materials necessary to grow into little baby ducks