Doug Allan / Snow petrel {Pagodroma nivea} flying over snowy landscape, Antarctica

Doug Allan / Snow Petrel (Pagodroma nivea) in flight over ice floes. Antarctic Peninsula, February. Freeze frame book plate page 129.

Suzi Eszterhas / Snow Petrel (Pagodroma nivea) flying over icebergs, South Orkney Islands, Southern Ocean

Roy Mangersnes / Snow Petrel (Pagodroma nivea) in flight over the Southern Ocean of the coast of Antarctica. November.

Colin Monteath / Snow Petrel (Pagodroma nivea) flying, east Antarctica

Mary McDonald / Snow Petrel {Pagodroma nivea} flying over the Antarctic seas.

Jan Vermeer / Snow Petrel (Pagodroma nivea) pair flying, Antarctica

Mark Taylor / Snow Petrels (Pagodroma nivea) in flight. Antarctica.

Chris Gomersall / Snow petrel (Pagodroma nivea) in flight. Southern Ocean, near South Shetland Isles, Antarctica.

Chris Gomersall / Snow petrel (Pagodroma nivea) in flight. Southern Ocean, near South Shetland Isles, Antarctica.

Doug Allan / Two Snow Petrel (Pagodroma nivea) calling from nest, Signy Island, Antarctica

Doug Allan / Snow petrel on sea ice {Pagodroma nivea} Antarctica.

SIMON KING / Snow petrel {Pagodroma nivea} in flight over snow drift, Antarctica.

Konrad Wothe / Snow Petrel (Pagodroma nivea) flying over ocean, Antarctica

Tui De Roy / Snow Petrel (Pagodroma nivea) couple courting, Reeve Hill near Davis Station, Vestold Hills, east Antarctica

Tui De Roy / Snow Petrel (Pagodroma nivea) portrait, Reeve Hill near Davis Station, Vestold Hills, east Antarctica

Tui De Roy / Snow Petrel (Pagodroma nivea) flying near Enderby Island, New Zealand

Dave Watts / Snow petrel sitting on nest {Pagodroma nivea} Antarctica

Doug Allan / Snow petrel in flight {Pagodroma nivea} Antarctica