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