Hibernating?

>>Larvae pupate on slender stems among vegetation, and pupae of the late summer or fall generation hibernate. Pupae may be either green or brown during the summer, but over-wintering pupae are brown. <<

This Spicebush Swallowtail pupa is definietely brown, a leaf mimic. We shall see...

More here: entnemdept.ufl.edu/creatures/bfly/spicebush_swallowtail.htm

Done