McNary National Wildlife Refuge protects a long stretch of the Columbia River along southeastern Washington and into Oregon, where river channels, sloughs, islands, mudflats, wetlands, shoreline bays, uplands, and farmland create diverse habitat. Managed by the United States Fish and Wildlife Service near Burbank and the Tri-Cities, it functions both as a river preserve and an urban refuge. The area is one of North America’s great concentrations of waterfowl, especially Canada geese, mallards, and wigeons, and plays a major role in the Pacific Flyway, with more than half the corridor’s mallards overwintering there. It also supports shorebirds, nesting water birds, bald eagles, peregrine falcons, and developing fall chinook salmon.