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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Ole Jorgen Liodden / Brown Skua (Stercorarius antarcticus) bathing, Auckland Islands. New Zealand. November.
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Ole Jorgen Liodden / Brown Skua (Stercorarius antarcticus) bathing, Auckland Islands. New Zealand. November.
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Andy Rouse / Lonnberg's / Subantarctic Skua (Stercoraius antarcticus lonnbergi) displaying aggressive behaviour, South Shetland Islands, Antarctica. (Non-ex)
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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.
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Tony Heald / Brown skua (Stercorarius antarcticus), two fighting over carrion whilst standing in sea. South Georgia. September.
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Mike Potts / Brown skua (Catharacta skua) sitting above a Hookers Sealion colony with tourists looking on. Enderby Island. Auckland Islands. Subantarctic New Zealand.
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Tui De Roy / Northern Rockhopper Penguin (Eudyptes moseleyi) with Brown skua (Stercorarius antarcticus) Gough and Inaccessible Islands UNESCO World Heritage Site, South Atlantic.
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Peter Bassett / South polar skua (Stercorarius maccormicki) in a King penguin (Aptenodytes patagonicus) colony, Gold Harbour, South Georgia.
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Peter Bassett / King penguin (Aptenodytes patagonicus) chick attacking a South polar skua (Stercorarius maccormicki), Gold Harbour, South Georgia.
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Peter Bassett / South polar skua (Stercorarius maccormicki) in a King penguin (Aptenodytes patagonicus) colony, Gold Harbour, South Georgia.