Mark MacEwen / Wedge-tailed Shearwaters (Puffinus pacificus) at night, Heron Island, southern Great Barrier Reef, Queensland, Australia. Taken with infra-red camera.

Chris & Monique Fallows / Pintado petrel (Daption capense) flying in snow, Southern Ocean.

Chris & Monique Fallows / Pintado petrel (Daption capense) flock in flight, Southern Ocean.

Theo Bosboom / Fulmar (Fulmarus glacialis) above snowy lava beach near Djupivogur in the East of Iceland, March

Ben Hall / Northern fulmar (Fulmarus glacialis) in flight against a waterfall, Iceland, January

Barrie Britton / Southern Giant Petrel (Macronectes giganteus), St Andrew's Bay, South Georgia. Photograph taken on location for the BBC Frozen Planet series, October 2009.

Danny Green / Fulmer (Fulmras glacialis) in flight near blue glacier, Svalbard, July. Bookplate from Danny Green's 'The Long Journey North'

Orsolya Haarberg / Northern fulmar (Fulmarus glacialis) below a black-legged kittiwake (Rissa tridactyla). The optical phenomenon, caused by a backscattering of light, is called a glory. Hornstrandir Nature Reserve, Ice...

David Tipling / Northern Fulmar (Fulmarus glacialis) flying along cliff at Sumburgh Head in evening light, Shetland, Scotland, June

Danny Green / Fulmar (Fulmarus glacialis) on sea at base of iceberg. Svalbard, June.

Peter Cairns / Fulmar (Fulmarus glacialis) in flight in front of Skogafoss waterfall, Iceland, June

Andy Trowbridge / Southern Giant Petrel (Macronectes giganteus) in flight off the coast of Kaikoura, Kaikoura, South Island, New Zealand. February.