Adult snow petrel (Pagodroma nivea nivea) near the Antarctic Peninsula, Antarctica, Southern Ocean, Polar Regions

Adult snow petrel (Pagodroma nivea nivea), in flight near the Antarctic Peninsula, Antarctica, Southern Ocean, Polar Regions

Adult snow petrel (Pagodroma nivea nivea), in flight near the Antarctic Peninsula, Antarctica, Southern Ocean, Polar Regions

A curious adult cape petrel (Daption capense), Lindblad Cove, Trinity Peninsula, Antarctica, Polar Regions

An adult snow petrel (Pagodroma nivea), in flight in Duse Bay, Weddell Sea, Antarctica, Polar Regions

Adult Snow Petrel (Pagodroma nivea) on the wing in and around the Antarctic peninsula

Adult snow petrel (Pagodroma nivea) on the wing in Crystal Sound below the Antarctic Circle, close to the Antarctic peninsula

Adult snow petrel (Pagodroma nivea) on the wing in Crystal Sound below the Antarctic Circle, close to the Antarctic peninsula

Snow Petrel, Pagodroma nivea, flying above icebergs, Weddell Sea, Antarctica.

Adult snow petrel (Pagodroma nivea) on the wing in the Drake passage close to the Antarctic peninsula

Southern Giant Petrel (Macronectes giganteus) on the wing in and around the Antarctic Peninsula.

Adult snow petrel (Pagodroma nivea) on the wing in Crystal Sound below the Antarctic Circle, close to the Antarctic peninsula

Adult Wilson's storm petrel (Oceanites oceanicus) on the wing and feeding after an iceberg calved near Port Lockroy, near the Antarctic Peninsula

Adult Snow Petrel (Pagodroma nivea) on the wing in and around the Antarctic peninsula

Adult snow petrel (Pagodroma nivea nivea) near the Antarctic Peninsula, Antarctica, Southern Ocean

Adult Snow Petrel (Pagodroma nivea) on the wing in and around the Antarctic peninsula

Southern Giant Petrel (Macronectes giganteus) on the wing in and around the Antarctic Peninsula.