| Brown-headed Gull | Chroicocephalus brunnicephalus (37) | |
| Black-billed Gull | Chroicocephalus bulleri (19) | |
| Gray-hooded Gull | Chroicocephalus cirrocephalus (76) | |
| Slender-billed Gull | Chroicocephalus genei (59) | |
| Hartlaub's Gull | Chroicocephalus hartlaubii (31) | |
| Brown-hooded Gull | Chroicocephalus maculipennis (49) | |
| Silver Gull | Chroicocephalus novaehollandiae (85) | |
| Bonaparte's Gull | Chroicocephalus philadelphia (79) | |
| Black-headed Gull | Chroicocephalus ridibundus (235) | |
| Red-billed Gull | Chroicocephalus scopulinus (39) | |
| Andean Gull | Chroicocephalus serranus (32) | |
| Swallow-tailed Gull | Creagrus furcatus (80) | |
| Little Gull | Hydrocoloeus minutus (74) | |
| Audouin's Gull | Ichthyaetus audouinii (58) | |
| Sooty Gull | Ichthyaetus hemprichii (17) | |
| Pallas's Gull | Ichthyaetus ichthyaetus (32) | |
| White-eyed Gull | Ichthyaetus leucophthalmus (25) | |
| Mediterranean Gull | Ichthyaetus melanocephalus (133) | |
| Relict Gull | Ichthyaetus relictus (4) | |
| Herring Gull | Larus argentatus (244) | |
| Armenian Gull | Larus armenicus (6) | |
| Olrog's Gull | Larus atlanticus (8) | |
| Belcher's Gull | Larus belcheri (36) | |
| Caspian Gull | Larus cachinnans (71) | |
| California Gull | Larus californicus (59) | |
| Mew Gull | Larus canus (177) | |
| Black-tailed Gull | Larus crassirostris (36) | |
| Ring-billed Gull | Larus delawarensis (208) | |
| Kelp Gull | Larus dominicanus (121) | |
| Lesser Black-backed Gull | Larus fuscus (224) | |
| Glaucous-winged Gull | Larus glaucescens (135) | |
| Iceland Gull | Larus glaucoides (131) | |
| Heermann's Gull | Larus heermanni (78) | |
| Glaucous Gull | Larus hyperboreus (138) | |
| Yellow-footed Gull | Larus livens (10) | |
| Great Black-backed Gull | Larus marinus (149) | |
| Yellow-legged Gull | Larus michahellis (136) | |
| Western Gull | Larus occidentalis (121) | |
| Pacific Gull | Larus pacificus (89) | |
| Slaty-backed Gull | Larus schistisagus (22) | |
| Thayer's Gull | Larus thayeri (29) | |
| Laughing Gull | Leucophaeus atricilla (205) | |
| Lava Gull | Leucophaeus fuliginosus (19) | |
| Gray Gull | Leucophaeus modestus (33) | |
| Franklin's Gull | Leucophaeus pipixcan (36) | |
| Dolphin Gull | Leucophaeus scoresbii (26) | |
| Ivory Gull | Pagophila eburnea (53) | |
| Ross's Gull | Rhodostethia rosea (30) | |
| Red-legged Kittiwake | Rissa brevirostris (10) | |
| Black-legged Kittiwake | Rissa tridactyla (146) | |
| Saunders's Gull | Saundersilarus saundersi (15) | |
| Sabine's Gull | Xema sabini (46) | |