This is another good spot for southern strays. One of the few spots in New York City where the dark female Eastern Tiger Swallowtail is relatively common. They must be migrating up the coast because no one ever seems to see dark females in the first brood in the Spring. These are just some of the best areas in the City. Almost any open area with plants will have at least some of the common species from Spring through Fall.
Numbers refer to months.
For example, Pipevine Swallowtail is rare to uncommon from May through October.