Polydamas butterflies lay a cluster of eggs on Pipevine. The caterpillars stay together in a group while they grow up.

This Polydamas Swallowtail photo is one of my favorites.

When they nectar, they MOVE, so it is extremely hard to get a clear picture.

Doesn't it look like the butterfly is dancing on top of the flower?

It's hard to find their chrysalides unless you raise them in containers; they look like leaves. I don't like to raise them because they stink (I think because the vine smells bad when they chew it).