How many weeks does the embryo of a chick take to develop?

The embryo inside the eggshell takes about three weeks to develop into a chick.

The embryo inside the egg is protected by the layer of hard shell around it. The hen sits on the eggs to provide sufficient warmth to them. It ensures the growth and development of the chick inside the eggshell. This process is called brooding. After the chick is completely developed, it bursts to open the eggshell.