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
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