21 days, whether under a hen or in an incubator. For a more complete answer, see the question and answer "How long does it take for eggs to hatch when a chicken is sitting on them"?
I am not sure where to get fertilized pigeon eggs, but why not look into getting chicken or duck eggs. You can usually get them from a local farmer for free as long as you promise to return the young after they hatch. You are getting the same experience for free, or next to free! And Yes, chicken and duck eggs can hatch in an incubator.
chicken takes 3 weeks to hatch, so it should take 3 weeks.
21 days is the incubation time for all chicken breeds.
With optimum conditions such as temperature and humidity a chicken egg takes 21 days to hatch. From when it was layed, about 20-28 days,depending on the breed. From the time when the egg first cracked, about one day. This is a very slow process.
The answer is chickens,because eggs come out of chickens.So the scientific method would be chickens were first. Except that eggs were being laid a long, long time before chickens existed and eggs is listed first in the question.
It tacks around about 21 days for a chicken to hatch
It takes 2 to 3 days for the eggs to hatch.
A chicken egg takes 21 days to hatch. It may take slightly more or less depending on the temperature and breed. Goose and duck eggs take as few days longer.
A bantam (mini) chicken egg takes the same amount to time to hatch as a regular egg: about 21 days. The time may be reduced very slightly, but in general it's the same. Of course, if the eggs are infertile, they will never hatch.
a frog or toad lays it's eggs in water and then leaves them to hatch and grow on their own
It takes about 21 days (3 weeks) for a chicken egg to hatch. 21 days exactly when they started incubating.
All chicken eggs take 21 days to hatch. The temperature is 100 degrees and the eggs must be turned three times per day.