Baby chicks say "cheep cheep" to their mother hen.
The peeping helps the hen know that her chicks are close by and safe.
More facts about Baby Animals
A baby kangaroo is called a joey and is tinier than a jellybean at birth.
Baby ducks can swim on their very first day.
A baby elephant can stand up soon after it is born.
Baby penguins wear fluffy coats until their waterproof feathers grow.
A baby giraffe is already taller than a grown-up when it is born.