One of my favorite places of all in Alaska is the Copper River Delta region near Cordova. During early May, the shorebird migration on the Delta has the greatest concentrations in North America with some 20 million birds passing through and stopping to eat. A road accessible bay, Hartney Bay, has extensive mudflats rich in micomus clams (the little pink ones) and other invertibrates. Nearly 100% of the world's population of western sandpipers and dunlin pass through the delta in their migration to nesting grounds. Most of the birds in this image are western sandpipers and dunlin (and glaucous winged gulls and herring gulls in the background).