Michael Pitts / Gentoo penguins (Pygoscelis papua) calling and defending their eggs from Southern Skua (Stercorarius antarcticus) hunting for unattended eggs or chicks, Sea Lion island, The Falklands, South Atlantic.
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Jessie Lane / Great skua, Godthill Harbour, South Georgia, Antarctica.
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Stefan Christmann / South polar skuas (Stercorarius maccormicki) Atka Bay, Queen Maud Land, Antarctica.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) with South polar skua (Stercorarius maccormicki) Atka Bay, Queen Maud Land, Antarctica. October.
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Stefan Christmann / South polar skua (Stercorarius maccormicki) resting on ground, Atka Bay, Queen Maud Land, Antarctica. October.
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Stefan Christmann / South polar skua (Stercorarius maccormicki) in flight, portrait. Atka Bay, Antarctica. March.
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Stefan Christmann / South polar skua (Stercorarius maccormicki) flying low across sea ice. Atka Bay, Antarctica. January.
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Stefan Christmann / South polar skua (Stercorarius maccormicki) standing on sea ice, portrait. Atka Bay, Antarctica. January.
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Stefan Christmann / South polar skua (Stercorarius maccormicki) standing on sea ice, portrait. Atka Bay, Antarctica. January.
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Stefan Christmann / South polar skua (Stercorarius maccormicki) stitting on ice. Atka Bay, Antarctica. February.
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Ashley Cooper / Brown skua (Stercorarius antarcticus) on the beach on Prion Island, South Georgia, Southern Ocean.
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Tony Heald / Brown skua (Stercorarius antarcticus) resting on tussock grass. Right Whale Bay, South Georgia. September.
