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Castle Rock National Wildlife Refuge is a 14 acre island located less than 2 miles off the coast of Crescent City , California. Part of Humboldt Bay National Wildlife Refuge Complex, Castle Rock is the second largest seabird breeding colony along the California coast, hosting more than 100,000 birds. Twelve different species are known to have nested on this island including common murre, cormorants, pigeon guillemots, Cassin's auklets, rhinoceros auklets, and storm petrels.

Visit Humboldt Bay National Wildlife Refuge Complex Photo Galleries ~ This link will take you to the Humboldt Bay NWR website.

  • Web Cams

    Rhinoceros Auklet

    In cooperation with Humboldt State University, the National Park Service, San Francisco Bay National Wildlife Refuge, the U.S. Geological Survey, and the U.S. Coast Guard, Humboldt Bay NWR installed a webcam on the island in 2006 to provide a live feed of California's second largest nesting colony for public enjoyment and scientific inquiry. 

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  • Castle Rock Webcam  In cooperation with Humboldt State University, the National Park Service, San Francisco Bay National Wildlife Refuge, the U.S. Geological Survey, and the U.S. Coast Guard, Humboldt Bay NWR installed a webcam on the island in 2006 to provide a live feed of California's second largest nesting colony for public enjoyment and scientific inquiry.