Native
Introduced
Reintroduced
Vagrant
Native (uncertain presence)
Regionally extinct vagrant
Regionally extinct
Synonyms : 褐头鸥 (cn), racek patagonský (cz), Patagonienmöwe (de), Argentinsk Hættemåge (dk), Brown-hooded Gull (en), Gaviola Cahuil (es), eteläamerikanlokki (fi), Gabbiano monaco (it), ミナミユリカモメ (jp), Patagonische Kokmeeuw (nl), Sørhettemåke (no), mewa patagońska (pl), Патагонская чайка (ru), Sydamerikansk skrattmås (se), čajka hnedokuklá (sl)
Brown-hooded Gull