We will sometimes plant fennel to feed them.
This is what the previous butterfly looked like around a couple of weeks earlier (not necessarily the same individual).
Things have been a little busy/stressful lately, so here is a random butterfly to look at.
A Black Swallowtail just out of its chrysalis
We always try to grow fennel, parsley, or dill for Black Swallowtail caterpillars. This one just emerged from its chrysalis on a basil. It has just about finished drying its wings.