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Patrick J. O'Keeffe / Raw Birds
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The European Herring Gull (Larus argentatus) is of the family Laridae which is in the genus Larus. There are several subspecies recognised including the Western European Herring Gull (Larus argentatus argenteus) which is resident in Ireland, Britain and the Near Continent.
European Herring Gull (Larus argentatus) distribution map 
Cephas, CC BY-SA 3.0 <https://creativecommons.org/licenses/by-sa/3.0>, via Wikimedia Commons
Green: year-round Yellow: breeding Blue: non breeding