MixedFlock 512

Large, mixed flocks of waterfowl like the one above are very common in the productive fresh water wetlands or loafing in Humboldt Bay.

  • Birds

    TundraSwan 150

    Humboldt bay is considered an internationally significant area for migratory birds due to the tremendous number of birds that visit it throughout the year. Approximately 260 different bird species have been documented in the vicinity of the bay. While the majority of birds visit the bay area from fall to early spring, a smaller portion stays throughout the breeding season to nest and rear their young. 

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  • Mammals

    RiverOtters 150

    Though the Refuge is primarily managed to provide valuable habitat for migratory birds, it is also called home by many species of mammals. More than 50 species of mammals have been documented at Humboldt Bay NWR, ranging from the smallest of voles to the massive Steller Sea Lion.   

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  • Fish

    CohoSalmon 150x101

    In total, Humboldt bay provides habitat for ~95 species of fish, 41 of which contribute to sport or commercial fisheries or have contributed to those fisheries in the past. Salmon Creek provides a passage corridor or habitat for various life stages of steelhead, Coho salmon, Chinook salmon, and coastal cutthroat trout, which are all Federal and/or State listed species. Tidewater goby, another federally listed species of fish, use the edges of the bay, particularly brackish areas with little to no current.

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  • Amphibians and Reptiles

    RoughSkinnedNewt LeValley 150

    Twenty species of amphibians and reptiles call Humboldt Bay NWR home. Though they are often hard to spot because of their small size and reclusive nature, you can be sure that they are all around you almost anywhere you step foot on the Refuge.

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  • Invertebrates

    TigerBeetle Pickart 150

    Invertebrates are the planet's biggest source of biodiversity and can be found on every level of the food chain and in every ecosystem on the planet. They perform vital roles in their environments and help regulate important biological processes.

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