Vega gull, East siberian gull, East siberian herring gull
The Vega gull, East Siberian gull, or East Siberian herring gull (Larus vegae ) is a large gull of the herring gull/lesser black-backed gull complex which breeds in Northeast Asia. Its classification is still controversial and uncertain. It is variously treated as a separate species, as a subspecies of the American herring gull (L. smithsonianus ) or included with both the American herring gull and European herring gull in L. argentatus. The Mongolian gull, Larus mongolicus, has previously been regarded as a subspecies of the Caspian gull (L. cachinnans ) but is now sometimes lumped with the Vega gull.
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starts withVega gulls breed in northeastern Siberia and winter in Japan, Korea, southern and eastern China, and Taiwan. They are regularly seen on St. Lawrence Island and Nome, Alaska and may breed there. There are also records from other parts of western Alaska, and a few photo documented records from Washington and California. In their winter range they are typically found in harbours, on rocky shores and at river mouths.
The Mongolian gull nests in Mongolia, neighbouring parts of Russia (such as Lake Baikal), northeastern China (e.g., Lake Hulun) and possibly South Korea. It migrates southeast to winter in southern and eastern China and Korea, with small numbers reaching Japan. In South Korea, it winters on inland waters more often than the Vega gull.