Thayer’s Gull (Larus thayeri)
Slender-billed Gull (Chroicocephalus genei)
Ross's Gull (Rhodostethia rosea)
Ivory Gull (Pagophila eburnea)
Sabine's Gull (Xema sabini)
Iceland Gull (Larus glaucoides)
Glaucous Gull (Larus hyperboreus)
Audouin's Gull (Larus audouinii)
Common Gull (Larus canus)
Ring-billed Gull (Larus delawarensis)
Black-headed Gull (Larus ridibundus)
Laughing Gull (Larus atricilla)
Franklin's Gull (Leucophaeus pipixcan)
Bonaparte's Gull (Larus philadelphia)
Mediterranean Gull (Larus melanocephalus)
Herring gull (Larus argentatus)
Armenian Gull (Larus armenicus)
Caspian Gull (Larus cachinnans)
Azorean Yellow-legged Gull (Larus michahellis atlantis)
American Herring Gull (Larus smithsonianus)
Great Black-backed Gull (Larus marinus)
Lesser Black-backed Gull (Larus fuscus)
Sooty gull (Larus hemprichii)
White-eyed Gull (Larus leucophthalmus)
Cape Gull (Larus vetula)
Heermann's Gull (Larus heermanni)
California Gull (Larus californicus)
Western Gull (Larus occidentalis)
Hartlaub's Gull (Larus hartlaubii)
