Adult Subantarctic Skua (Catharacta antarctica lonnbergi) cleaning itself in glacier run off at Stromness Bay, South Georgia, Polar Regions

Adult Subantarctic Skua (Catharacta antarctica lonnbergi) on tussac at Salisbury Plain on South Georgia Island, Polar Regions

Adult Subantarctic Skua (Catharacta antarctica lonnbergi) on tussac at Salisbury Plain on South Georgia Island, Polar Regions

Adult male Antarctic fur seal (Arctocephalus gazella) harassing a skua at Torgersen Island, Antarctica, Polar Regions

Brown skua (Catharacta antarctica) sitting on snow, Neko Harbour, Anvord Bay, Antarctic Peninsula, Antarctica, Polar Regions

Subantarctic Skua, Stercorarius antarcticus, displaying amid King Penguin colony, Aptenodytes patagonicus, Salisbury Plain, South Georgia, South Atlantic Ocean.

Pair of Skua's (Catharacta sp.) attacking and killing chinstrap penguin, Deception Island, Antarctica, Southern Ocean.

Subantarctic Skua (Stercorarius antarcticus) fighting over carcass. Salisbury Plain, South Georgia, South Atlantic Ocean.

Chick. Falkland Skua or Brown Skua (Stercorarius antarcticus, exact taxonomy is under dispute). They are the great skuas of the southern polar and subpolar region. South America, Falkland Islands, January

On nest eating egg of Black-browed albatross (Thalassarche melanophris). Falkland Skua or Brown Skua (Stercorarius antarcticus, exact taxonomy is under dispute). They are the great skuas of the southern polar and subpolar region. South America, Falkland Islands, January

Chick. Falkland Skua or Brown Skua (Stercorarius antarcticus, exact taxonomy is under dispute). They are the great skuas of the southern polar and subpolar region. South America, Falkland Islands, January

Chick. Falkland Skua or Brown Skua (Stercorarius antarcticus, exact taxonomy is under dispute). They are the great skuas of the southern polar and subpolar region. South America, Falkland Islands, January

Falkland Skua or Brown Skua (Stercorarius antarcticus, exact taxonomy is under dispute). They are the great skuas of the southern polar and subpolar region. South America, Falkland Islands, January

Chick. Falkland Skua or Brown Skua (Stercorarius antarcticus, exact taxonomy is under dispute). They are the great skuas of the southern polar and subpolar region. South America, Falkland Islands, January

Falkland Skua or Brown Skua (Stercorarius antarcticus, exact taxonomy is under dispute). They are the great skuas of the southern polar and subpolar region. South America, Falkland Islands, January