These are Swallowtail butterflies. They started out as eggs on my mom's parsley, then after awhile they turned into caterpillars and they ate up all the parsley. Then we saw a giant praying mantis eating one of the caterpillars so we brought the rest inside. Mom fed them some more parsley then they went into their chrysalis. Then one day there were butterflies in the cage and we took them outside and let them go. We like butterflies. Love Oliver.