Cheesequake is a state park at the eastern edge of Middlesex County. It encompasses part of the large salt marsh surrounding Cheesequake Creek and two forest types: a small pine-oak forest and a larger oak-hickory forest. Given the multiple habitats and the park's position along the boundary of forest and salt marsh, one would expect a diversity of bird life, particularly during migration, but the park has never quite seemed to match its full potential as a birding site. Yesterday the birding was reasonably good, with a few mixed flocks containing nine species of warblers in addition to the resident songbirds.
In addition to the butterflies pictured here, I also saw a Spicebush Swallowtail (Papilio troilus) and Cabbage White (Pieris rapae).