After a female butterfly has mated, she lays her eggs on a plant and dies.
A caterpillar hatches from each egg and begins to eat. As it eats, it outgrows its skin and grows into a new one.
When it is fully grown, its skin hardens to form a chrysalis. Changes begin to take place inside it.
After a while, a butterfly emerges from the chrysalis. It dries its wings and flies off in search of food.