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Common Gull
Larus canus
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Great Black-backed Gull
Larus marinus
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Heermann's Gull
Larus heermanni
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Herring Gull
Larus argentatus
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Lesser Black-backed Gul
Larus fuscus
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Pacific Gull
Larus pacificus
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Ring-billed Gull
Larus delawarensis
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Southern Black-backed Gull
Larus dominicanus
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Western Gull
Larus occidentalis
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Yellow-legged Gull
Larus michahellis