How Many Days Is Goose Incubation? Temperature, Humidity and Cooling Guide

The goose is a small-farm favourite for its large eggs and hardy goslings; but its artificial incubation is one of the most patience-demanding among poultry. Besides being waterfowl, the very large egg makes humidity management and cooling critical. In this guide we explain the goose egg's incubation period, temperature and humidity, turning and the waterfowl-specific steps.

If you've read our guide to hatching eggs in an incubator, which explains the general logic through the chicken, here we'll focus only on what's specific to geese.

How Many Days Is Goose Incubation?

A goose egg hatches in 28-34 days; for most breeds the average is 30 days. It varies by breed: light breeds may hatch earlier (28-30), heavy breeds later (32-34). It's clearly longer than the chicken's 21 days.

The period splits in two:

• Days 1–27: development period
• Days 28–34: hatch period

Temperature for Goose Incubation

• Forced-air (fan) machines: 37.4 – 37.6 °C
• Still-air (static) machines: 38.0 – 38.5 °C (measured at egg level)

The large egg can hold heat differently inside the machine; if possible place the eggs in a single layer with spacing, and verify with an external thermometer.

Humidity for Goose Incubation

• Days 1–27 (development period): 55%–65%
• Days 28–34 (hatch period): 75%–80%

Because the goose egg is so large it loses water slowly; for the air cell to grow enough, cooling-and-misting matters even more than for ducks.

The Waterfowl Step: Cooling and Misting

In nature the mother goose leaves the nest each day to go to water, and on returning dampens the eggs with her wet feathers. In the machine:

• When: From about day 7-10 until day 27.
• How: Once a day (twice in the final weeks if needed), open the lid for 10-20 minutes to cool; then mist with lukewarm water and close.
• Why: It keeps the thick shell membrane of the large egg from hardening too much and eases hatching.

Turning and Candling

• Turning: 3-5 times a day, an odd number. Turning the large eggs by hand is often safer than an automatic tray. Stop turning at the end of day 27.
• Candling: on days 7, 15 and 27. Even though the shell is thick, the network of veins can be seen with a strong light; remove empty and non-developing eggs.

The Hatch Period (From Day 28)

1. Stop turning (at the end of day 27) and stop the cooling-and-misting.
2. Raise humidity to 75-80%.
3. Don't open the lid.
4. Be patient: the hatch window is wide (28-34 days) and a large gosling can take over a day to break out. Don't intervene.

After Hatching: Niacin and Space

Goslings are also prone to niacin (B3) deficiency; use niacin-supplemented feed. They are large and grow fast, so the brooder needs more space than for chicks and a shallow, tip-proof drinker.

The Most Common Mistakes

• Acting on the chicken/duck calendar. Goose is about 30 days, turning stops on day 27, and hatching can run to day 34.
• Skipping cooling-and-misting. With the large egg this step is even more critical.
• A cramped brooder. Goslings grow fast; space and niacin are essential.

The goose's long, wide hatch window makes it hard to track which day you're on. The Kuluçka Takip app automatically sets the right calendar for each species (chicken, duck, goose) and notifies you of turn-stop and hatch reminders. You can check out the app here.

Goose incubation, with its long period and large eggs, is one of the most patience-demanding yet most rewarding hatches. Knowing the differences — the 28-34 day window, stopping turning on day 27, and regular cooling-and-misting — is the key to success. For the general principles, see our chicken incubation guide.