Ventilation also changes the humidity inside an incubator. Remember to use warm water, so you don’t affect the incubator temperature too much. Anything that stays wet and increases surface area. Sometimes, as a quick fix, I have used kitchen roll doubled over several times, laid across the bottom and coming out over the sides of a small plastic container. Adding an extra plastic tray, or if you are short on space, a smaller container with a piece of sponge coming out of the top. A few incubators use a separate humidifier (a heater that evaporates the water into the air as warm steam).īy increasing the surface area of water, you can increase the humidity in an incubator. Sometimes, manufacturers use a sponge or ‘absorbing pad’ is used to increase the surface area of the water. It is the surface area of the water exposed to the air that creates the humidity. There are trays or pans, usually topped up by a container/reservoir of water. Water evaporates into the air to cause humidity inside an incubator. Initially, chicks live off the yolk they have absorbed before hatching, so they won’t normally eat for 24 hours, so you can leave the first to hatch in the incubator for up to a day if needed. If you remove the lid, the moisture is lost! Remember, once a chick hatches, the humidity will increase, and this will help the others. Raising the humidity for a short time does not make a significant difference to the average moisture loss.ĭo not remove the lid of the incubator during this time. Once a chick ‘pips’ making a small hole in the shell to breathe, 24 hours before hatching, the membrane is at risk of drying it out, so be sure to increase humidity about three days before the hatch day. The increased humidity keeps the membrane soft enough for chicks to break out. We stop turning eggs, and the humidity inside the incubator (or separate hatcher) needs to be higher to get the best hatch rates. We go into what most people call “lockdown” during the last three days of incubation, ready for the hatch.
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