The answer varies. It can be anything depending on what you mean by fully-grown. If you mean to ask how long it takes until a chick has grown to the 'point-of-lay' stage, then this answer varies depending on the breed of the chicken. Usually it is around 4 - 6 months. If you mean how long it takes from a chick to maturity, it is usually around 3 - 5 months again depending on breed.
it takes about 3-4 months
Until the egg hatches.
It takes 2,805 steps
A chick is a young bird! An elephant is a mammal. So unless 'magic' is involved, a chick will never grow into an adult elephant.
About 4-6 days depending on how much you give it love and heat.
A Larvesta egg hatches after 10,455-10,709 steps.
Until you have all your adult teeth
A goose egg before it hatches, is about 4 inches long.
Well I cant tell you that because im not a chick a dont work at Wing Stop!!!! ahahahaha 39 dog years *
Until they starve to death
5 months until it become a adult
It takes five days! :D