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