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Region
- Three Arch Rocks National Wildlife Refuge >> Tillamook County >> Oregon >> United States 3
- Lower Klamath National Wildlife Refuge >> Siskiyou County >> California >> United States 2
- Malheur National Wildlife Refuge >> Harney County >> Oregon >> United States 2
- Alaska >> United States 1
- California >> United States 1
- Farallon National Wildlife Refuge >> San Francisco County >> California >> United States 1
- Hawaiian Islands National Wildlife Refuge >> Honolulu County >> Hawaii >> United States 1
- Upper Souris National Wildlife Refuge >> Renville County >> North Dakota >> United States 1
- Washington >> United States 1
- Wichita Mountains Wildlife Refuge >> Comanche County >> Oklahoma >> United States 1
- Yukon Delta National Wildlife Refuge >> Bethel Census Area >> Alaska >> United States 1