On the western landing of the Mill Basin Bridge on Belt Parkway, one may notice a sizable wetland bound by the highway, Mill Basin, and Flatbush Avenue. It is home to four rare bird species: the Saltmarsh, Song, Swamp, and Savannah sparrows, resulting in its name, the Four Sparrow Marsh.
With Kings Plaza shopping center to its north and the Jamaica Bay Wildlife Refuge to its south, Four Sparrow Marsh has been a contented ground between advocates of commerce and natural preservation.