To me, the sounds of the bobolink and R2-D2 seem one-half natural, and one-half synthesized — “Some keep the Sabbath going to church, I keep it staying at home, with a bobolink for a chorister, and an orchard for a dome.” — Emily Dickinson On a recent hike, as I watched birds fly around at a local prairie, I was happy to spot a bobolink while…