How Long Do Java Sparrow Eggs Take To Hatch?

How Long Do Java Sparrow Eggs Take To Hatch

Java Sparrows breed after the rainy season, which is basically the spring season. During each yearly breeding season, a female Java tends to lay 3 to 4 clutches of eggs, with each clutch containing 4 to 8 eggs. But how long do Java Sparrow eggs take to hatch?

It takes Java Sparrow eggs 13 to 15 days to hatch. During the hatching or incubation period, both male and female Java take turns to incubate the eggs. But if you are hatching the eggs in captivity, you need to provide them with adequate temperature and turn the eggs every hour.

Understanding the hatching process of Java eggs is related to understanding the breeding habits of these birds. So I decided to highlight some of these important parts in today’s article.

Java Sparrow Egg Hatching: An Overview

Clutch SizeDepends on Birds
Number Of Clutches3 to 4
Number Of Eggs In Each Clutch4 to 8
Incubation/Hatching Period13 to 15 days
Hatching Temperature37.5°C or 99.5°F
Weaning Period3 to 4 weeks

How Long Do Java Sparrow Eggs Take To Hatch?

In the wild, Java Sparrows breed only during the breeding season. However, if you are breeding them in captivity, your Javas can breed at any time of the year if you ensure them the right nesting and temperature. But for that, make sure you know, What do Java Sparrows nest in?

And after they lay the eggs, both male and female Java Sparrows take turns to hatch the egg. This is called the incubation period. But how long does it last?

Well, the incubation period can vary depending on a number of factors. Things like the environment, Java Sparrow’s size, number of eggs, etc., change the duration of hatching. But nevertheless, the eggs usually hatch in 13 to 15 days.

Hatching Java Sparrow Eggs In Captivity

I did not know much about hatching or incubating Java Sparrow eggs until I had a few pairs in my aviary. To be honest, I did not know about incubation in the wild until then. But as I learned more about incubation in captivity and got my first clutch of Java eggs, I realized how important it is to maintain the right temperature.

So, what is the right way to incubate Java Sparrow eggs in captivity?

The key to hatching or incubating eggs in captivity is to keep the egg at the right temperature. And as for Java eggs, the temperature should be 37.5° Celsius or 99.5° Fahrenheit. And you must ensure the eggs get heat from all sides. And to do that, you must turn the eggs every hour until they are hatched.

Frequently Asked Questions

Q. Do all Java Sparrow eggs hatch at the same time?

Not all Java Sparrow eggs hatch at the same time. The hatching depends on various factors, such as the environment, temperature, number of eggs, and how they are placed. Depending on these, some Java eggs may hatch a day or two earlier or later than others.

Q. How many days after mating do Java Sparrows lay eggs?

Usually, the female Java lays eggs around 5 to 7 days after mating. And the thing about Javas is that they lay one egg per day until the clutch is completed.

Q. What do baby Java Sparrows eat?

In the wild, or sometimes even in captivity, the baby Javas are fed seeds by the parents. But if you are caring for the chicks, you can give them some good-quality seed mix and feed them using a small tube. Make sure to give only one drop or two at a time so the baby can swallow easily and the feeding time should be once every 2 hours.


Some Java Sparrow owners are just as impatient as I am when it comes to getting baby Javas. That is why they often ask, “How long does it take for Java Sparrow eggs to hatch?”

With all the necessary things and the environment provided, the eggs usually hatch in 13 to 15 days. But don’t expect them to hatch all at once because some eggs may take a day or two more before the babies emerge.

About the author

Leave a Reply

Your email address will not be published. Required fields are marked *

Latest posts