Humboldt Bay National Wildlife Refuge protects wetlands on California’s North Coast near Eureka and Arcata and serves as a major stop along the Pacific Flyway. More than 200 bird species, including 80 kinds of waterbirds and four endangered species, feed, rest, or nest there and around the bay. Tens of thousands of shorebirds, ducks, geese, swans, and black brant use the area, while eelgrass beds and grasslands support large seasonal gatherings of brant and Aleutian cackling geese. The refuge also provides habitat for about 100 fish species. As the largest unit in its refuge complex, it anchors a broader protected landscape of dunes, seabirds, and marine mammals.