The zinnia garden

The butterflies love the zinnia garden and so do I. I'm not sure what type butterfly this is. I'm guessing it is a stage of the black swallowtail but I'm not sure. It is black and yellow and never lit on a flower. It was mostly interested in the other swallowtail butterfly. I spent a little enjoyable time in the garden today but mostly spent the day house cleaning and packing for our trip to the farm. Be safe the beast is still out there.