In a verdant floodplain valley between the Patagonia and Santa Rita mountains of southeastern Arizona, within the watershed of Sonoita Creek, lies some of the richest of the remaining riparian (streamside) habitat in the region. One of few permanent streams, it provides for a wide array of diverse species from endangered fishes to butterflies and birds. The internationally-known destination for birders. Take a tour of the preserve on Saturdays at 9 AM. Meet at the Visitor Center for an easy 1-2 hour hike (no reservations needed).