0-433-1 California, San Francisco Bay, Don Edwards National Wildlife Sanctuary
1-370-1 California, San Francisco Bay, Don Edwards National Wildlife Sanctuary
1-370-2 California, San Francisco Bay, Don Edwards National Wildlife Sanctuary
1-370-21 California, San Francisco Bay, Don Edwards National Wildlife Sanctuary
1-370-5 California, San Francisco Bay, Don Edwards National Wildlife Sanctuary
1-371-8 California, San Francisco Bay, American avocet Recurvirostra americana
1-372-65 California, San Francisco Bay, Don Edwards National Wildlife Sanctuary
1-372-66 California, San Francisco Bay, Don Edwards National Wildlife Sanctuary
1-859-69 California, Sonoma County, San Pablo Bay National Wildlife Refuge, Napa Slough
1-859-96 California, Sonoma County, San Pablo Bay National Wildlife Refuge, Pickleweed
1-860-14 California, Sonoma County, San Pablo Bay Nat Wildlife Refuge, water sampling
1-860-4 California, Sonoma County, San Pablo Bay National Wildlife Refuge, Pond 7A
1-98-17 California, Sonoma County, Marsh, Tubbs Island
2-350-19 California, San Francisco Bay, San Pablo National Wildlife Refuge, slough at sunset
2-351-95 California, San Francisco Bay, San Pablo National Wildlife Refuge, slough at sunset
7-455-18 California, San Francisco Bay, Mudflats, Coyote Hills Regional Park
7-455-19 California, San Francisco Bay, Mudflats, Coyote Hills Regional Park
7-455-4 California, San Francisco Bay, Grasses and mudflats, Coyote Hills Reg Park
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©David Sanger or individual photographer. All rights reserved.