Swallowtail Caterpillars

Remember these eggs? When I looked for them the past Saturday morning they were gone. But I saw no caterpillars.

This has changed.

"I've got something to show you," said Patty as I arrived home from work, "In the front garden."

This:

A Black Swallowtail Caterpillar.

There were several and of different instars.

All munching away on our dill plants.

As was this one, which I was not able to identify.

I think it is a type of Slug Caterpillar. Perhaps an instar not illustrated in my guide book. Hopefully the birds won't eat it and we'll find out.