The Southwest Loop of the Washington Birding Trail, published in 2005, features 270 Washington’s 365 common bird species. This loop takes travelers from the deltas and wetlands of south Puget Sound out to breaker-washed coastlines. Sandy shores rumple into dunes below sculpted rock headlands above the Pacific Ocean, home to pelagic birds. Rivers flow from forested hills into sheltered bays, winter havens for waterfowl and nourishing stopovers for hundreds of thousands of migrating shorebirds.