How does the egg color impact on hatching time?

[FranklinD]

I had different color egg for incubation, olive, blue, dark brown, white and pink brown and brown. At 20 ays, the eggs (about 6) that are white, brown and pink brown started to break egg shell. For other colors of eggs (7 eggs), it is already 22 days but no sigh for hatching. I am not sure what caused it.

 

[abanjaf]

Welcome to BYC!!!

In general, egg color has no impact on length of incubation, 21 days to incubate (although some bantams will hatch at 19 days). Then you need to allow for variances in temperature of the incubator (I'm assuming you used an incubator and not a broody). Warmer temps in the bator can cause earlier hatches and vice versa cooler temps cause later hatches. If you used a still air bator, there could have been warmer/cooler pockets so egg placement in the bator could have had an effect as well. There are too many variables to predict what happened here. Did you candle the eggs? Were all the eggs fertile? Did all the eggs show good embryo development throughout incubation? Sometimes, for whatever reason hatches don't go well. Some breeds are known to be a bit more difficult to hatch than others. I would give your unhatched eggs another day. If the eggs still haven't pipped (breaking the egg shell), then you can candle them and check for signs of life. The latest I have ever had an egg hatch was Day 23, however other people have posted on here as long as Day 26.

Congratulations on your new babies!