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Do Some Eggs Hatch Late? [Solved]

No, don’t worry. Whilst it’s usual for chicken eggs to pip at day 21, it’s by no means unusual for them to start later. Lots of separate issues can affect the time to hatching. Most of them relate to temperature.

Incubator Hatching Problems - Why Didn’t the Eggs Hatch?

It’s disappointing when

Late Overdue Hatching: Float Testing Egg Viability

So you have

Late hatching chicken eggs | Float testing egg viability

What to to with overdue incubated