Antarctic tern, Guia de Fauna. RutaChile
Familia: 
Sternidae 															Genero:  
Sterna 							Nombre Cientifico: vittata 							
DISTRIBUTION IN CHILE:
Antarctica, and possibly in the southern area.
HABITAT:
Islands and rocky beaches and predregosas.
DESCRIPTION:
Length: 39 - 41 cms.
Very similar to South American Tern (Tern). It differs by having shorter legs, thin and being a little kid. It is possible that both races they encounter in the extreme south, but there is a curiosity: does not move north on the Pacific side, instead goes to Brazil on the Atlantic side.
Very difficult to differentiate in the middle. 
 
Countries where lives Gaviotin Antártico
			     ESTADOS UNIDOS     
		
			
			     CHILE     
		
			
			     ARGENTINA     
		
			
			     NORUEGA     
		
			
			     ISLANDIA