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The Sonoran Desert is particularly reliant on its bats. Covering more than 100,000 square miles of southwest California, Arizona and Mexico’s northern Sonora and Baja California, it has been called the most ecologically diverse desert in North America in both flora and fauna. Approximately 70 species of bats live in the Sonoran Desert. Arizona alone is home to 28 species, second only to Texas in bat diversity in the U.S. Throughout the desert, the winged mammals are crucial for the reproduction and survival of iconic plants like the region’s giant saguaro cactus and the agave that makes tequila.