An Eastern Black Swallowtail (Papilio polyxenes) is laying eggs on the parsley in my garden. | Butterfly Lady

The black swallowtails (Papilio polyxenes) have found our golden Alexanders (Zizia sp.). Not only do their larvae absorb toxins from the host plants, the also evert an orange forked gland called the osmeterium that is covered in a foul smelling liquid. | In Defense of Plants

Watch 16 Black swallowtail butterfly emerging from chrysalis one after another

4K HD video of one Black Swallowtail caterpillar, Papilio polyxenes, walking on a parsley plant looking for spot to eat. defecates on way up. Clay pot in background

4K HD video of one Black Swallowtail caterpillar, Papilio polyxenes, upside down, eating parsley plant. Blue background sky with clouds.

A black swallowtail, papilio polyxenes, caterpillar on carrot top leaves in a garden