Yes.
about 21- 31 days after they are lain if the hen or incubator stays on them.
they are called chicks
No. A broody hen will hatch a brood of chicks the way nature intended. Incubators or a brood hen are the only two ways to get chicks, egg won't hatch into chicks without the proper conditions of heat and humidity for 21 days.
If the brood hen is with them, they sleep under the hen. They stay safe and warm under her wings and body. Chicks raised in an artificial incubator are raised in a brooder box which maintains a constant temperature and humidity until the chicks are old enough to withstand the ambient outside/inside temperatures.
It really depends on how good a broody the hen is, and the reliability of your incubator and your experience incubating chicks.
Baby chickens can be produced with the help of an incubator.
chicks are baby hens hens are female chickens
Brood hens hatch chicks. A brood is a collection of baby chicks hatched by one hen.
Chicks absorb the yolk before hatching; they have enough nutrients via the yolk to last for 48 hours. DO NOT REMOVE the chicks from the incubator until they are fully dry, and the whole clutch has finished hatching.
You don't need to remove the chick from its brood hen, they will integrate into the flock when they are ready and the momma hen will protect it while it is growing. The chick does not really need the momma hen other than for protection and warmth on cold nights. The hen does not feed the chick, it knows how to feed itself from the time it emerged from the shell.
Well, baby chicks are in the incubator to be warm. I once watched them hatch out of it. They take exactly 21 days to hatch. You're welcome.
The average is 4 to 8 weeks