Dunlins and Western Sandpipers do, as described by Stan Senner. The immense, remote Copper River Delta, just southeast of Prince William Sound in Alaska, is arguably one of the most important stopover sites for migratory waterbirds in the world, and the author does a captivating job in describing its importance to the successful migrations of Dunlins and Western Sandpipers. Almost the entire world's population of Western Sandpipers appears to stop at the Copper River Delta during spring, and most of the west coast population of the Dunlin (Calidris alpina pacifica) does the same.