Loon

| image = Gavia immer -Minocqua, Wisconsin, USA -swimming-8.jpg | image_caption = The common loon (''Gavia immer'') | parent_authority = Coues, 1903 | taxon = Gavia | authority = Forster, 1788 | type_species = ''Gavia immer'' | diversity_link = #Systematics and evolution | diversity = 5 species | synonyms = Family-level:
Colymbidae Vigors, 1825 (but see text)
Colymbinae Bonaparte, 1831 (but see text)
Urinatores Vieillot, 1818
Urinatoridae Vieillot, 1818
Urinatorides Vieillot, 1818 ---- Genus-level:
''Colymbus'' Linnaeus, 1758 (but see text)
''Urinator'' Lacépède, 1799 }}

Loons (North American English) or divers (British / Irish English) are a group of aquatic birds found in much of North America and northern Eurasia. All living species of loons are members of the genus ''Gavia'', family Gaviidae and order Gaviiformes. Provided by Wikipedia