
Hatching baby chicks from eggs can be an enriching experience, but it requires careful planning and attention to detail. The incubation period for chicken eggs is typically around 21 days, but it can vary depending on the breed and other factors. During the last few days before hatching, it is crucial not to disturb the hen as she works to maintain humidity and temperature. While it is uncommon, chicks may start to hatch under a hen as early as day 19 of the incubation period.
| Characteristics | Values |
|---|---|
| Expected time for chicks to hatch | 21 days, sometimes a day or two earlier or later |
| Humidity level on day 19 | 55-65% |
| Days to begin listening for cheeping chicks | After day 19 |
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What You'll Learn

Humidity should be increased to 55-65% on day 19
The humidity of the environment in which chicks hatch is critical to their survival. The humidity level should be increased to 55-65% on day 19 to ensure the chicks' comfort and safety. This is because humidity plays a vital role in preventing the eggs from losing too much or too little moisture during the incubation process.
Maintaining the right humidity level is a delicate balance. If the humidity is too low, the environment becomes dry, leading to dust production, which can pose health risks to the chicks. Conversely, if the humidity is too high, it creates an environment conducive to mould and bacterial growth. Therefore, the humidity level should be carefully monitored and adjusted as needed.
During the first 18 days of incubation, experts recommend maintaining a humidity level between 45-50%. This ensures that the eggs do not lose the necessary moisture, which can cause the chick to stick to the shell and membranes at hatching. However, if the humidity is too high during this period, it can weaken the chick, making it difficult for them to emerge from the shell.
As you approach day 19, the humidity should be increased to 55-65% for the remaining days of incubation. This higher humidity level helps prepare the chicks for hatching and ensures they have the necessary moisture to successfully break out of their shells.
It is also important to note that the temperature must be monitored and maintained alongside humidity. The optimal temperature range for chick hatching is between 65° and 75°F, with a consistent temperature reading between 99° and 102°F before placing eggs in an incubator.
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Chicks usually start hatching on day 21
Chickens typically have an incubation period of 21 days, after which the chicks will hatch. Hatching usually begins on days 19-21. During the last three days of the 21-day setting period, the hen typically does not leave the nest, so it is important not to disturb her during this critical time.
To help the chicks start strong, it is recommended to feed them a complete chick starter feed from the time they hatch until week 18 or when the first egg arrives. It is also important to note that there is a 50/50 chance that a chick will be born a rooster, so be prepared to rehome any roosters if you are unable to keep them.
In the days leading up to the hatch, it is important to monitor the hen and provide her with food and water. It is normal for the hen to become stressed by in-reaching hands, so be careful not to disturb her or accidentally squash any vulnerable hatching chicks.
On day 22, offer the hen and chicks some chick starter crumbles in addition to the hen's regular food ration. Provide them with clean, fresh water in a shallow, age-appropriate waterer or an ice cream container cut down to a height of around 2 centimetres.
Overall, hatching chicks can be a rewarding experience with proper planning and equipment.
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Don't disturb the hen in the last 3 days before hatching
It is normal for a hen not to leave the nest in the last three days of the 21-day setting period. During this time, the hen works to maintain humidity and temperature during the incubation period's most critical time. Therefore, it is important not to disturb, lift, or move the hen during these final three days.
To prepare for the arrival of the chicks, keep the feed and water near the nest so that the hen does not have far to travel to reach it. Marking the eggs can help distinguish which eggs in the nest are hatching eggs and which were recently laid by other hens. Eggs should be collected from the coop at least once a day to remove freshly laid eggs.
On day 19, increase the humidity to around 55-65% for the last few days of incubation. It is important to consult any manuals or documentation that come with your incubator for temperature recommendations as this may vary depending on the type of incubator.
While it typically takes 21 days for chicken eggs to hatch under a broody hen, it is not uncommon for this process to take 22 or 23 days. Therefore, it is important to pay attention to the expected date of hatch and begin listening for cheeping chicks any time after day 19.
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Marking eggs makes it clear which are hatching eggs
Chickens typically hatch after 21 days, although it can take up to 23 days. In the three days before the chicks hatch, the hen will try to maintain humidity and temperature, so it's important not to disturb her during this critical time.
Marking the eggs makes it clear which eggs are hatching eggs and which were recently laid by other hens. This is especially important if you are hatching eggs under a broody hen, as you will need to remove freshly laid eggs from the coop at least once a day. Marking the eggs also helps you keep track of which eggs you have turned, which is a critical step in hatching. Eggs must be physically turned to prevent the developing chick from sticking to the shell. By turning the eggs, the yolk turns within the albumin, moving the yolk away from the shell and making it safe for the embryo until it is time to turn again.
There are different ways to mark the eggs. You can mark an X on one side and an O on the other, or number each egg with a pencil. If you are using an incubator, you can also candle the eggs to check on their progress.
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Broody hens are committed to hatching chicks
Broody hens will sit on a clutch of eggs for 21 days (sometimes 18 or 19 days) until they hatch. In the three days before the chicks are hatched, do not disturb the hen as she will be working hard to maintain humidity and temperature during the incubation period's most critical time.
To ensure a broody hen is committed to hatching chicks, it is wise to put her through her paces with ordinary hatching eggs before purchasing expensive hatching eggs. Some hens give up on the task after a few days and abandon the nest. A committed broody hen will usually accept hatching eggs with no problems.
If you need to take eggs from a broody hen, wait until she's up for the day and remove them from the nest. If you want to add more eggs than she already has, wait until she's up for her daily eating and drinking and put some in her nest.
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Frequently asked questions
Yes, chicks can start to hatch as early as day 19, or even a day or two earlier for smaller chicken breeds.
On day 19, increase the humidity to around 55-65% for the last few days of incubation. Chicks will start cheeping on day 21, so be prepared to help the hen.
Hatching usually takes place between days 19 and 21, but it can take up to 22 or 23 days for some of the eggs to hatch.
In the three days before the chicks are expected to hatch, do not disturb the hen. She will be working hard to maintain humidity and temperature during the incubation period's most critical time.






































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