African Skimmer Arctic Skua Arctic tern Black Skimmer Black Tern Black-headed Gull Black-legged Kitiwake Brown Noddy California Gull Caspian Tern Collared Pratincole Common Gull Common Tern Franklin's Gull Geat Crested Tern Glaucous-winged Gull Great Blackback Great Skua Grey Gull Gull-billed Tern Herring Gull Large-billed Tern Laughing Gull Lava Gull Lesser Black-backed Gull Little Gull Little Tern Mediterranean, Relict Gull Pomarine Skua Ring-billed Gull Roseate Tern Royal Tern Ruff Sandwich Tern Slender-billed Gull Sooty Gull Swallow-tailed Gull Waved Albatross Whiskered Tern Yellow-billed Tern Yellow-legged Gull Yellow-legged Gull Yellow-legged Gull

Anous stolidus Chlidonias hybridus Chlidonias niger Chroicocephalus genei Chroicocephalus ridibundus Creagrus furcatus Gelochelidon nilotica Glareola pratincola Hydrocoloeus minutus Hydroprogne caspia Larus argentatus Larus cachinnans Larus cachinnans atlantis Larus californicus Larus canus Larus delawarensis Larus fuscus Larus glaucescens Larus hemprichii Larus marinus Larus melanocephalus Larus michahellis Leucophaeus atricilla Leucophaeus fuliginosus Leucophaeus modestus Leucophaeus pipixcan Phaetusa simplex Philomachus pugnax Phoebastria irrorata Rissa tridactyla Rynchops flavirostris Rynchops niger Stercorarius parasiticus Stercorarius pomarinus Stercorarius skua Sterna albifrons Sterna dougallii Sterna hirundo Sterna maxima Sterna paradisaea Sternula superciliaris Thalasseus bergii Thalasseus sandvicensis