How to Incubate Muscovy Duck Eggs
The short version
| Incubation temp (forced-air) | 99.5–100°F (37.5–37.8°C) |
|---|---|
| Still-air temp (top of egg) | 102–103°F (38.9–39.4°C) |
| Humidity (days 1–lockdown) | 55–60% |
| Humidity (lockdown–hatch) | 65–80% |
| Total incubation | 35–37 days |
| Lockdown day | Day 31 |
| Candle around | day 7, day 10, day 28 |
Day-by-day schedule
| Day | Phase | What to do | Temp | Humidity |
|---|---|---|---|---|
| Days 1–7 | Incubation | Set eggs and turn at least 4–5 times a day (an odd number, or use an autoturner). Muscovy eggs are large and greasy-shelled, so give them a full week before candling. Candle around day 7 looking for the first spider-web of veins — waterfowl eggs can be slower and harder to read than chicken eggs. | 99.5–100°F | 55–60% |
| Days 8–14 | Incubation | Keep turning and hold temperature steady. Many waterfowl hatchers begin daily cooling and misting now — take eggs out for 5–15 minutes, mist lightly with lukewarm water, then return them. This mimics a broody Muscovy leaving the nest and helps the thick shell lose moisture at the right rate. Candle to pull clears and blood rings. | 99.5–100°F | 55–60% |
| Days 15–24 | Incubation | Continue turning, cooling, and misting daily. Watch the air cell grow: by the last week it should reach roughly a third of the egg. Muscovy have a longer window here than any common duck, so don't panic if development looks unhurried — you are only halfway through when Pekin ducklings would be near hatch. | 99.5–100°F | 55–60% |
| Days 25–30 | Incubation | Final turning and cooling days. Candle around day 28 to confirm a large, drawn-down air cell and a dark egg full of duckling. Stop misting a day or two before lockdown so the shell isn't wet going into hatch. | 99.5–100°F | 55–60% |
| Day 31 | Lockdown | Stop turning, stop cooling. Lay eggs on their side, raise humidity to 65–80%, and keep the incubator closed. This is 'lockdown' — Mississippi State cites the 31st day for Muscovy versus the 25th day for other ducks. | 99.5–100°F | 65–80% |
| Days 32–34 | Hatch | Ducklings internally pip into the air cell, then externally pip the shell. Muscovy hatches are slow — a duckling can take 24–48 hours from first pip to zip. Resist opening the lid; humidity loss shrink-wraps a pipped duckling to the membrane. | 99.5–100°F | 65–80% |
| Days 35–37 | Hatch | Most ducklings zip and hatch across this window. Leave them in the incubator to dry and fluff before moving to a brooder. Late arrivals on day 36–37 are normal for Muscovy, especially from cooler incubators or eggs set at slightly different times. | 99.5–100°F | 65–80% |
Why Muscovy are different from other ducks
Muscovy (Cairina moschata) are not mallard-derived. Pekin, Rouen, Khaki Campbell, Runner and virtually every other domestic duck descend from the wild mallard and hatch in 28 days. Muscovy are a separate South American species, and their eggs take about 35 days — Cornell's Duck Research Laboratory and Mississippi State Extension both put Muscovy at roughly 35 (Mississippi State lists 35–37).
That extra week changes the whole schedule. Lockdown moves from day 25 to day 31, candling milestones shift later, and the hatch itself is drawn-out and slow. If you incubate Muscovy on a Pekin timeline you will lock down and then open the incubator far too early. Temperature and humidity setpoints, however, are the same as for other ducks: 99.5–100°F forced-air and roughly 55–60% relative humidity during incubation.
Temperature and humidity
Run a forced-air incubator at 99.5–100°F — Cornell's Duck Research Laboratory cites 99.5°F (37.5°C) and Mississippi State cites 100°F; either is within the safe band. In a still-air incubator, add about 2–3°F and measure at the top of the egg, so roughly 102–103°F there.
Hold humidity near 55–60% through incubation, then raise it to 65–80% for the hatch. Cornell recommends about 55% relative humidity while setting and increasing toward 80% as eggs pip; Mississippi State cites roughly 58–60% during incubation and 65% or more at hatch. Waterfowl hatchers often run drier day-to-day and lean on the air cell as the real guide.
Cooling, misting, and turning
Turn Muscovy eggs at least 4–5 times a day through day 30 (Cornell specifies a minimum of four times daily), or use an autoturner. Because the shell is thick and waxy, many hatchers add a daily cooling and misting step from the second week: remove the eggs for 5–15 minutes, mist with lukewarm water, and return them. This copies a broody Muscovy hen leaving the nest and encourages steady moisture loss so the air cell reaches the right size by lockdown.
Stop turning, cooling, and misting at day 31 and let the long hatch run its course. From first external pip to a fully zipped duckling can take one to two days — patience, not intervention, is what a Muscovy hatch needs.
Calculate your hatch dates
Enter the date you set your muscovy duck eggs to get your candling, lockdown, and hatch dates — with a calendar download.
Pick a species and the date you set the eggs to see your candling, lockdown, and hatch dates.
Dry-hatch vs standard humidity
- Waterfowl eggs lose moisture more slowly through their thick, waxy shells, so many hatchers run Muscovy on the drier end (roughly 45–55%) through most of incubation and rely on the air cell rather than a fixed humidity number. The target is the same: the air cell should reach about a third of the egg by lockdown.
- Candle and weigh to check moisture loss — hatching eggs should lose roughly 13–14% of their set weight by lockdown. If the air cell is too small, lower humidity or add cooling; if it is racing ahead, raise humidity.
Shipped eggs
- Let shipped eggs rest large-end up for 8–24 hours before setting so scrambled air cells can re-settle.
- Muscovy hatching eggs are seasonal and often shipped long distances; expect reduced hatch rates from jostled air cells and transit temperature swings. Set more than you need.
- If air cells are wobbly or detached ('saddled'), incubate upright in a carton for the first week and hand-turn gently.
Common pitfalls
- Assuming Muscovy hatch on day 28 like other ducks and giving up a week early — they run about 35 days (35–37).
- Stopping turning at day 25 (the mallard-duck lockdown) instead of the correct day 31 for Muscovy.
- Skipping cooling and misting: Muscovy's thick, greasy shells hold moisture, and steady cooling/misting through incubation helps the air cell develop properly.
- Opening the incubator during the slow Muscovy hatch, which drops humidity and can shrink-wrap a pipped duckling that hasn't zipped yet.
- Trusting the incubator's built-in gauges — calibrate temperature and humidity against known-good instruments first.
Frequently asked questions
- What temperature do I incubate Muscovy duck eggs at?
- 99.5–100°F in a forced-air incubator, or about 102–103°F measured at the top of the eggs in a still-air incubator. This is the same setpoint used for other ducks — only the length of incubation differs.
- What day is lockdown for Muscovy duck eggs?
- Day 31. Stop turning (and stop any cooling/misting), raise humidity to 65–80%, and keep the incubator closed until the ducklings hatch around day 35. Note this is later than the day-25 lockdown used for mallard-derived ducks.
- How long do Muscovy duck eggs take to hatch?
- About 35 days (35–37) — roughly a week longer than the 28 days other duck breeds take, because Muscovy are a separate species, not mallard-derived. Late ducklings on day 36–37 are normal.
- What humidity do I need for hatching Muscovy duck eggs?
- Around 55–60% relative humidity during incubation, then 65–80% from lockdown through hatch. Because waterfowl eggs lose moisture slowly, use the air-cell size as your real guide — it should reach about a third of the egg by day 31.
- Do Muscovy duck eggs need cooling and misting?
- It helps. Many waterfowl hatchers cool the eggs 5–15 minutes and mist them with lukewarm water once a day from about the second week. This mimics a broody hen leaving the nest and helps the thick, waxy shell lose moisture at the right rate. Stop before lockdown on day 31.
- Why are Muscovy duck eggs so slow compared to other ducks?
- Muscovy (Cairina moschata) are a distinct South American species, not descended from the wild mallard like Pekin, Rouen, and Khaki Campbell. That different biology gives them a ~35-day incubation and a notably slow, drawn-out hatch — a single duckling may take 24–48 hours from first pip to hatching.
Sources
- Hatching Duck Eggs — Cornell University College of Veterinary Medicine — Duck Research Laboratory (University extension)
- Important incubation factors — Mississippi State University Extension Service (University extension)
- Duckling Hatching Basics — University of California Agriculture & Natural Resources (4-H) (University extension)