Sweetwater Wetlands In Tucson, Arizona is both nature park and water treatment and reclamation facility. Birds filmed: Northern Shoveler, American Wigeon, Nothern Pintail, Gadwall, Ruddy Duck, Green-winged Teal, Blue-winged Teal, Great Egret, American Coot, juvenile Black-crowned Night Heron, juvenile Pied-billed Grebe, Killdeer, Wilson's Phalarope, Red-winged Blackbird, and call of Gambel's Quail and Spotted Sandpipper. The Western Diamondback Rattlesnake was also filmed in the park.