Gygis

White terns comprise the two species of terns in the genus Gygis. The best known (and formerly only) species in the genus is the common white tern.^[1] The little white tern (Gygis microrhyncha), previously considered a subspecies of the white tern (Gygis alba microrhyncha), is now recognised as a second species of white tern.^[2]

Gygis
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Charadriiformes
Family:	Laridae
Subfamily:	Gyginae
Genus:	Gygis Wagler, 1832
Species
Gygis alba Gygis microrhyncha