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Chroicocephalus genei Chroicocephalus philadelphia Chroicocephalus ridibundus Hydrocoloeus minutus Ichthyaetus ichthyaetus Ichthyaetus melanocephalus Larus argentatus Larus cachinnans Larus canus Larus delawarensis Larus fuscus Larus glaucoides Larus hyperboreus Larus marinus Larus michahellis |
Leucophaeus atricilla Leucophaeus pipixcan Pagophila eburnea Rissa tridactyla Rhodostethia rosea Xema sabini |