Family: Sternidae

Norwegian name: Ternefamilien

Systematics :

KingdomAnimals (Animalia)
Phylum Chordata
Subphylum  Vertebrata
Class   Birds (Aves)
Order    Charadriiformes
Family     Sternidae
Genus      Gelochelidon
Species       Gull-billed Tern (Gelochelidon nilotica)
Genus      Hydroprogne
Species       Caspian Tern (Hydroprogne caspia)
Genus      Sternula
Species       Little Tern (Sternula albifrons)
Genus      Chlidonias
Species       White-winged Black Tern (Chlidonias leucopterus)
Species       Black Tern (Chlidonias niger)
Genus      Terns (Sterna)
Species       Common Tern (Sterna hirundo)
Species       Arctic Tern (Sterna paradisaea)
Genus      Thalasseus
Species       Sandwich Tern (Thalasseus sandvicensis)