Are seagulls endangered or extinct

The Herring Gull (Larus argentatus) is in fact listed on the IUCN's Red List Of Threatened Species ver. 2011.1- but is listed as "Least Concern" (LC) which means it's still a long way from being truly threatened, it simply means that there has been a substantial decline in numbers (since the 80's). This goes for the European Herring gull as well as the North American Herring Gull.