A monarch butterfly beginning to eclose (emerge from its chrysalis)
A monarch butterfly beginning to emerge from its chrysalis (eclose)

About 24 hours after the chrysalis turned black, the butterfly begins to emerge (or eclose) from the chrysalis. The chrysalis splits open, and the butterfly’s head, feet, and wings emerge. The butterfly holds on tightly to the chrysalis, pulls out its abdomen, and hangs from the now-empty chrysalis casing.

A monarch butterfly, freshly eclosed (emerged from its chrysalis), hangs from its empty chrysalis, its wings still crumpled
A monarch butterfly that has just emerged from its chrysalis (eclosed)

When it first emerges, the butterfly’s wings are small and crumpled, and its abdomen is very large. The butterfly’s first job is to pump fluid from its abdomen into its wings. If you watch for about 30 minutes, you will see the wings unfold and grow larger, as the butterfly pumps them full of fluid. You may even see a drop or two of pink liquid fall from the wings.

A monarch butterfly that has just eclosed (emerged from its chrysalis) drying its wings
A monarch butterfly that has recently eclosed, drying its wings

After the wings are fully pumped up, the butterfly hangs for another one to two hours, and gently flaps its wings, to dry them. It is only then that it is ready to fly.