A Birth of a Swallowtail Butterfly

My younger son keeps many kinds of insects. He even keeps caterpillars and one of them changed to a swallowtail butterfly this morning. The butterfly was beautiful in yellow and black. My son looked forward to watching the birth of a butterfly from a pupa but he missed out on the chance to watch that because the birth happened so early in the morning. He despaired at that and I felt for him. When a caterpillar becomes a pupa next time, he will get up early.