A bad hatch is hard, but it is rarely bad luck. In our years of hatching Coturnix and Northern Bobwhite quail, almost every failed hatch traces back to one of these seven causes.
1. Temperature drift
Forced-air incubators should hold about 99.5°F. Even one or two degrees off for a few days can stop growth or cause early or late hatches. Check with a second thermometer you trust.
2. Humidity too high or too low
The air cell tells the truth. If it is small at lockdown, the eggs held too much water. If it is very large, they dried out. Adjust humidity based on the air cell, not just the number on the screen.
3. Shipped eggs not rested
Shipped eggs need to sit pointed end down for 12 to 24 hours at room temperature before they go in the incubator. This lets the air cell settle.
4. Wrong turning
Eggs need turning several times a day until lockdown, then no turning at all. Forgetting to stop turning is a common cause of chicks that pip but never zip.
5. Opening the incubator at lockdown
Each time the lid opens during hatch, humidity drops fast and the membranes can shrink-wrap the chick. Keep it closed.
6. Giving up too early
Coturnix hatch around day 17 to 18. Bobwhite need about 23 to 24 days. Many people toss eggs that were still on schedule.
7. Not reading the leftovers
Unhatched eggs are evidence. Opening them and noting the stage they stopped at points straight to the cause.
Want the full troubleshooting system, day by day? Get Why Your Quail Eggs Didn't Hatch here.
Related: How to Incubate Quail Eggs: Day-by-Day and What to Do When Shipped Hatching Eggs Arrive.
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