Humboldt Bay National Wildlife Refuge

Humboldt Bay NWR is located on Humboldt Bay on the northwest California coast. The refuge has two main purposes: to protect and enhance wetlands and bay habitats for migratory birds, especially black brant, and to protect endangered species and their habitats, including the Humboldt Bay wallflower. The refuge includes the Lanphere and Ma-le'l Dunes, one of the most pristine remaining dune ecosystems in the Pacific Northwest. It also administers Castle Rock NWR, a 14-acre island located less than a mile off the California coast, which contains the largest breeding population of common murres in California and provides a roost for Aleutian cackling geese during migration.