The next phase in the life cycle of our yard has begun, now with caterpillars

Years ago when we first planted fennel and our kids were young, we began noticing eastern black swallowtail butterflies laying eggs. We collected some of the stems with eggs and put them in an aquarium and then continued feeding the caterpillars fresh fennel as they grew.

We haven't collected them in the last several years but +Julie Abuelsamid collected some yesterday and we currently have five caterpillars growing. In a few weeks we'll release the butterflies. ?