The caterpillar eats its shell then goes to find milkweed leaves to eat. The caterpillar begins pupation. It is motionless for 1 and a half weeks. Inside the pupa also known as the chrysalis the monarch is transforming from a caterpillar to a butterfly.
When the process has finished, the butterfly is ready to come out of the chrysalis. Their wings take a couple of hours for the fluid to expand them to their full size. The monarch finds nectar from flowers and the life cycle starts again.