Identifier les Goélands de la Véga, du Taïmyr et mongol

There are three clearly recognizable main forms of the « Herring Gull Assemblage » which are widely but not uniformly distributed throughout South Korea between October and March. Based on structure, plumage details and available published and unpublished information, these can be identified as Taimyr, Vega and Mongolian Gulls. It is asserted that each of these three main groups show consistent differences in juvenile and first winter plumages, and can also be identified as non-breeding adults. 
We propose you a French version of the article titled « Herring Gull Assemblage » written by Nial Moores and published in English on the website www.wbkenglish.com in which he presents the main Gulls species that can be found in winter in South Corea, describing the key features to identify them and speaking about their repartition in this country.