The birds of the Pacific Flyway depend on a diverse chain of habitats, from Arctic tundra and northwestern rainforest to tropical beaches and mangroves. Audubon's network of Chapters, volunteers, activists, and members is preserving and restoring these vital links along the way.
Each year at least a billion birds migrate along the Pacific Flyway, which stretches from the North Slope of Alaska to Central and South America. But these birds are only a fraction of those that used the flyway a century ago. Some species, such as the Black-footed Albatross and the Least Tern, are in serious trouble, and even many common birds, such as the Western Sandpiper, have become far less common. Habitat loss, water shortages due to diversion for agriculture and development, diminishing food sources, and climate change all threaten the birds of the Pacific Flyway.