Antarctic Tern  Sterna vittata georgiae , juvenile;  videograbs (20x).
   Drygalski Fjord, South Georgia, 24 March 2002.

   Antarctic Tern  Sterna vittata georgiae , adult in winter plumage;  videograbs (320x).
   Grytviken, South Georgia, 25 March 2002.

   Antarctic Tern  Sterna vittata sanctipauli , adult;  videograbs (20x).
   Tristan da Cunha, 1 April 2002.

   Antarctic Tern  Sterna vittata sanctipauli , top left: juvenile, other five: adult;  videograbs (20x).
   Tristan da Cunha, 3 April 2002.