Not sure exactly what you're asking here. IF you are asking how long it takes from when a baby chick starts to peck itself out of the shell to when it's finally out, the answer is A COUPLE OF MINUTES. I guess I've seen chicks get out in as quickly as a minute and some that have taken up to five minutes to fully extricate themselves, but the majority are out of the shell in 2-3 minutes. If, on the other hand, you're asking how long it takes from when the hen starts to incubate the egg to when it's hatched, the answer is 21 DAYS.
yes, they do. it keeps the egg warm for the time being.
i think it is?
you hatch eggs to grow the chicks into chickens for their meat and eggs to eat
The egg dinosoars layed eggs long before chickens
3 to 5 days after hatching 3 to 5 days after hatching
Chickens are not born they are hatched. Unhatched chickens are called Embryos. Embryos are fertilized egg at any stage of development prior to hatching
The egg. Dinosaurs laid eggs long, long before chickens existed.
Brooding
No
They start breathing.
A baby platypus incubates in the egg for ten days before hatching. It then remains in the chamber at the end of its mother's breeding burrow for several months.
Chicks hatch from eggs, they can hatch without mum or dad being present either before or after hatching. However for them to be born there must be a chicken to make the egg and sperm to fertilise it.