BONAPARTE'S GULL
CALIFORNIA GULL
FRANKLIN'S GULL
GREAT BLACK-BACKED GULL
GREAT BLACK-BACKED GULL
HERRING GULL
HERRING GULL
RING-BILLED GULL
RING-BILLED GULL
WESTERN GULL
CASPIAN TERN
FORSTER'S TERN (SUMMER)
FORSTER'S TERN (SUMMER)
FORSTER'S TERN (WINTER)
FORSTER'S TERN (SUMMER)
BLACK SKIMMER
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BONAPARTE'S GULL

Mississippi River, Mud Lake, Iowa
CALIFORNIA GULL

Antelope Island, Great Salt Lake, Utah
FRANKLIN'S GULL

Great Salt Lake, Utah
GREAT BLACK-BACKED GULL

Mississippi River, L&D#14, LeClaire, Iowa
GREAT BLACK-BACKED GULL

Mississippi River, L&D#14, LeClaire, Iowa
HERRING GULL

Mississippi River, L&D#14, LeClaire, Iowa
HERRING GULL

Marie Louise Lake, Ontario, Canada
RING-BILLED GULL

Mississippi River, Sabula, Iowa
RING-BILLED GULL

Mississippi River, Dubuque, Iowa
WESTERN GULL

Bolsa Chica Ecological Reserve, California
CASPIAN TERN

Bolsa Chica Ecological Reserve, California
FORSTER'S TERN (SUMMER)

Bolsa Chica Ecological Reserve, California
FORSTER'S TERN (SUMMER)

Mississippi River, Mud Lake, Iowa
FORSTER'S TERN (WINTER)

Bolsa Chica Ecological Reserve, California
FORSTER'S TERN (SUMMER)

Bolsa Chica Ecological Reserve, California
BLACK SKIMMER

Bolsa Chica Ecological Reserve, California