Gulls of Europe, North Africa, and the Middle East : an identification guide / Peter Adriaens, Mars Muusse, Philippe J. Dubois, Fr?ed?eric Jiguet.

Gulls of the Western Palearctic
Black-legged Kittiwake Rissa tridactyla
Ivory Gull Pagophila eburnea
Sabine's Gull Xema sabini
Slender-billed Gull Chroicocephalus genei
Bonaparte's Gull Chroicocephalus Philadelphia
Brown-headed Gull Chroicocephalus brunnicephalus
Black-headed Gull Chroicocephalus ridibundus
Grey-headed Gull Chroicocephalus cirrocephalus
Little Gull Hydrocoloeus minutus
Ross's Gull Rhodostethia rosea
Laughing Gull Leucophaeus atricilla
Franklin's Gull Leucophaeus pipixcan
Mediterranean Gull Ichthyaetus melanocephalus
Small Hybrid Gulls
Relict Gull Ichthyaetus relictus
White-eyed Gull Ichthyaetus leucophthalmus
Sooty Gull Ichthyaetus hemprichii
Common Gull Larus canus canus
Russian Common Gull Larus canus heinei
Kamchatka Gull Larus (canus) kamtschatschensis
Short-billed Gull Larus brachyrhynchus
Ring-billed Gull Larus delawarensis
Audouin's Gull Ichthyaetus audouinii
Pallas's Gull Ichthyaetus ichthyaetus
Great Black-backed Gull Larus marinus
Kelp Gull (Cape Gull) Larus dominicanus vetula
Glaucous-winged Gull Larus glaucescens
Glaucous Gull Larus hyperboreus
Iceland Gull Larus glaucoides glaucoides
Kumlien's Gull Larus glaucoides kumlieni
Thayer's Gull Larus thayeri
European Herring Gull Larus argentatus argentatus and argenteus
American Herring Gull Larus smithsonianus
Vega Gull Larus vegae
Caspian Gull Larus cachinnans
Azores Gull' Larus michahellis atlantis
Yellow-legged Gull Larus michahellis
Armenian Gull Larus armenicus
Slaty-backed Gull Larus schistisagus
Lesser Black-backed Gull Larus fuscus graellsii and L. f. intermedius
Baltic Gull Larus fuscus fuscus
Heuglin's Gull Larus (fuscus) heuglini
Steppe Gull Larus (fuscus?) barabensis
"Viking Gull" Larus argentatus x hyperboreus
Large Hybrid Gulls.