Egg-Once an egg is laid it takes about 21 days for a chick to grow. The shell will serve as a protection to the egg. When the chick is ready to hatch it will use an 'egg tooth' to hatch the egg. This can take up to a day for the chick to fully exit the egg.
Chick- As soon as the chick hatches from the egg they are able to walk. Chicks eat seeds, bugs, and warms. It takes about 4 weeks for the chick to grow all of its feathers. A comb will grow on the chick's head and a wattle will grow below its beak.
Chicken-It takes about 6 months for a chick to fully develop into a chicken. Female chicks are called hens when they grow up and male chicks are called roosters. Hens can lay eggs.