An ANS walk through several sections of Piscataway Park began with this stop at Piscataway Creek. The trip yielded lots of nice dragonflies and butterflies and some good birds: Bald Eagle (Haliaeetus leucocephalus) (adult and immature), Osprey (Pandion haliaetus) (patrolling but not catching any fish), quick looks at a Louisiana Waterthrush (Seiurus motocilla), a cooperative pair of Blue Grosbeaks (Giuraca caerulea). Buttonbush proved to be a good spot for finding butterflies. New ones to my very short list: Zebra Swallowtail (Eurytides marcellus), black-morph Eastern Tiger Swallowtail (Papilio glaucus), Juniper Hairstreak (Callophrys gryneus), Least Skipper (Ancyloxypha numitor).