Millions of birds are beginning their journey north along the Pacific Flyway! The Pacific Flyway is a superhighway, up to 1,000 miles wide and 9,000 miles north-south, traveled by more than 350 species of birds migrating between Alaska and Patagonia, at the tip of South America. These species include loons, grebes, pelicans, herons, egrets, swans, geese and ducks, to name just a few. Birds migrate north as early as March and head south as early as August each year. Along the route there are many important habitats where species gather to rest and feed before continuing on to their destination.