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Global Range: (5000-20,000 square km (about 2000-8000 square miles)) Range includes a small portion of Sonora, Mexico, and a small area in south-central Arizona (USFWS 1995, Hernández et al. 2006). Northern limit of historical range is defined by the Altar and Santa Cruz valleys in Arizona (Arizona Game and Fish Department 2001). This subspecies was extirpated from the United States by about 1900. A reintroduced population now exists at the Buenos Aires National Wildlife Refuge in southern Arizona. Elevational range extends from 10 to 1,200 meters. Elevational range on the Buenos Aires National Wildlife Refuge is 942 to 1,135 meters (Arizona Game and Fish Department 2001).