Danny Green / Brunnich's guillemot (Uria lomvia) colony in mist, many birds in flight and nesting on cliffs. Svalbard, Norway, July 2018.

Terry Whittaker / Man collecting seabird eggs, including those of Common guillemots (Uria aalge), Skoruvikurbjarg cliffs, Langanes Peninsula, Iceland, May.

Terry Whittaker / Man being lowered down a cliff to collect seabird eggs, including those of Common guillemots (Uria aalge). Camera attached to helmet, Skoruvikurbjarg cliffs, Langanes Peninsula, Iceland, May.

Terry Whittaker / Man being lowered down cliff to collect seabird eggs, including those of Common guillemots (Uria aalge), Skoruvikurbjarg cliffs, Langanes Peninsula, Iceland, May.

Terry Whittaker / Man being raised up cliff to collect seabird eggs, including those of Common guillemots (Uria aalge), Skoruvikurbjarg cliffs, Langanes Peninsula, Iceland, May.

Terry Whittaker / Man being lowered down a cliff to collect seabird eggs, including those of Common guillemots (Uria aalge). Camera attached to helmet, Skoruvikurbjarg cliffs, Langanes Peninsula, Iceland, May.

Terry Whittaker / Man being lowered down a cliff to collect seabird eggs, including those of Common guillemots (Uria aalge). Camera attached to helmet, Skoruvikurbjarg cliffs, Langanes Peninsula, Iceland, May.

Terry Whittaker / Man being lowered down a cliff to collect seabird eggs, including those of Common guillemots (Uria aalge). Camera attached to helmet, Skoruvikurbjarg cliffs, Langanes Peninsula, Iceland, May.

Terry Whittaker / Man sorting seabird eggs, including those of Common guillemots (Uria aalge) into egg boxes, Skoruvikurbjarg cliffs, Langanes Peninsula, Iceland, May.

Terry Whittaker / Man being lowered down a cliff to collect seabird eggs, including those of Common guillemots (Uria aalge). Skoruvikurbjarg cliffs, Langanes Peninsula, Iceland, May.

SCOTLAND: The Big Picture / Puffin (Fratercula arctica) silhouetted at sunset on Hermaness, Shetland, Scotland, UK, June.

SCOTLAND: The Big Picture / Puffins (Fratercula arctica) Shaint Isles, Scotland, UK, June.

Marie Read / Horned Puffin (Fratercula corniculata) flying over a pattern of kelp and sea foam, photographed from above, St. Paul, Pribilof Islands, Alaska, USA. July.

SCOTLAND: The Big Picture / Puffins (Fratercula arctica) and Razorbills (Alca torda) with Eilean Mhuire behind, Shiant Isles, Outer Hebrides, Scotland, UK. June, 2018

Pal Hermansen / Avalanche on Gullemot (Uria aalge) nesting cliff on first day birds return to breed. Finnmark, Norway. March.

Philippe Clement / Two Atlantic puffins (Fratercula arctica) in breeding plumage on cliff top, Sumburgh Head, Shetland Islands, Scotland, UK, June.

Philippe Clement / Common guillemots (Uria aalge) and Razorbills (Alca torda) swimming and fishing at sea, Fowlsheugh RSPB Reserve, Aberdeenshire, Scotland, UK, May.

Philippe Clement / Razorbill (Alca torda) looking around on sea cliff top at seabird colony in spring, Fowlsheugh RSPB Reserve, Aberdeenshire, Scotland, UK, May

Guy Edwardes / Puffin (Fratercula arctica) wings spread backlit, Great Saltee Island, County Wexford, Republic of Ireland, June.

SCOTLAND: The Big Picture / Puffin (Fratercula arctica), with Thrift (Armeria maritima) in the foreground, Fair Isle, Shetland Islands, Scotland, UK, July.

Pal Hermansen / Brunnich's guillemot (Uria lomvia) taking off from water, Alkefjellet. Svalbard, Norway, July.

SCOTLAND: The Big Picture / Atlantic puffin (Fratercula arctica) flapping with sand eels in beak, in evening light, Fair Isle, Shetland, Scotland, UK, June.

Danny Green / Atlantic Puffins (Fratercula arctica) bill rubbing, Skomer Island, Wales, UK, April

Danny Green / Atlantic Puffin (Fratercula arctica) flock resting on a snow bank, Hornya, Varanger, Norway, April

Danny Green / Atlantic Puffin (Fratercula arctica) looking down a nesting chamber, Skomer Island, Wales, UK, May

Danny Green / Atlantic Puffin (Fratercula arctica) wing stretching with sand eels in beak, Flannan Isles, Scotland, UK, July

Danny Green / Atlantic Puffin (Fratercula arctica) coming out of its burrow with a gift, Skomer Island, Wales, UK, May

Danny Green / Atlantic Puffins (Fratercula arctica) resting on a cliff top in the sunset, Sule Skerry, Scotland, UK, July

Danny Green / Atlantic Puffin (Fratercula arctica) preening in late evening light, Heimaey, Westman Isles, Iceland, June

Danny Green / Atlantic Puffin (Fratercula arctica) pair bill rubbing part of courtship ritual, Skomer Island, Wales, UK, May

Pal Hermansen / Puffin (Fratercula arctica) portrait, Iceland, June.

Pal Hermansen / Puffin (Fratercula arctica) close up portrait, Iceland, June.

Andres M. Dominguez / Razorbill (Alca Torda) on cliff, Farne Islands, Northumberland, England, UK, June.

Andres M. Dominguez / Razorbills (Alca torda) group of three on cliff face, Farne Islands, Northumberland, England, UK, June.

Erlend Haarberg / European shag (Phalacrocorax aristotelis) sitting at the entrance of a cave with flock of Common guillemots (Uria aalge) and Gulls (Laridae) flying past cave, Hornoya and Reinoya Nature Reserve, Finnm...

Gerrit Vyn / Tufted puffin (Fratercula cirrhata) in breeding plumage. St. Paul Island, Alaska. July.

Marie Read / Horned puffin (Fratercula corniculata) close-up portrait, St. Paul Island, Pribilofs, Alaska, USA, July.

Marie Read / Tufted puffin (Fratercula cirrhata), close-up portrait, St. Paul Island, Pribilofs, Alaska, USA, July.

Marie Read / Horned puffins (Fratercula corniculata), one landing with outspread wings, to join its mate on cliff ledge, St. Paul Island, Pribilofs, Alaska, USA, July.

Espen Bergersen / Razorbills (Alca torda) in flight, with Atlantic puffin (Fratercula arctica) behind, Hornoya, Norway. March

Espen Bergersen / Gyrfalcon (Falco rusticolus) flying with guillemot prey. Hornoya bird cliff. Finnmark, Norway. March

Espen Bergersen / Common guillemot (Uria aalge) flock, circling outside the breeding colony at Hornoya birdcliff, Finnmark, Norway.

Espen Bergersen / Common guillemot (Uria aalge) calling, bridled guillemot morph with white ring around the eye, Hornoya bird cliff, Finnmark, Norway. March.

Espen Bergersen / Atlantic puffin (Fratercula arctica) two fighting in snow, Hornoya bird cliff, Finnmark, Norway. March.

Espen Bergersen / Atlantic puffin (Fratercula arctica) two birds fighting at nesting ground, Hornoya bird cliff, Finnmark, Norway. March.

Espen Bergersen / Atlantic puffin (Fratercula arctica) two calling aggresively in snow, Hornya birdcliff, Finnmark, Norway.

Espen Bergersen / Atlantic puffins (Fratercula arctica) group interacting, Hornoya bird cliff, Finnmark, Norway. March.

Espen Bergersen / Atlantic puffin (Fratercula arctica) and European shag (Phalacrocorax aristotelis) Hornoya, Finnmark, Norway. March.

Ole Jorgen Liodden / Tufted puffin (Fratercula cirrhata) swimming on the sea, Commander Island, Russia, September.

Ole Jorgen Liodden / Atlantic puffin (Fratercula arctica arctica) in flight carrying sandeels and larger fish, Hornoya, Vardo, Norway, July.

David Pattyn / Puffin (Fratercula arctica) silhouettes, Hornoya, Varanger, Finnmark, Norway, May.

David Pattyn / Puffin (Fratercula arctica), Hornoya, Varanger, Finnmark, Norway, April.

Markus Varesvuo / Puffin (Fratercula arctica) silhouetted at sunset, Shetland Islands, Scotland, UK, July.

Hanne & Jens Eriksen / Black guillemot (Cepphus grylle) taking off, Denmark, May

Roy Mangersnes / Brunnich's guillemot (Uria lomvia) in flight low over sea, Spitsbergen, Svalbard, Norway, June.

Roy Mangersnes / Brunnich's guillemot (Uria lomvia) diving into sea, Spitsbergen, Svalbard, Norway, July.

Roy Mangersnes / Brunnich's guillemots (Uria lomvia) on sea, Spitsbergen, Svalbard, Norway, July.

Roy Mangersnes / Brunnich's guillemots (Uria lomvia) on sea, Spitsbergen, Svalbard, Norway, July.

Andy Trowbridge / Puffin (Fratercula arctica) standing on flowering Sea thrift (Armeria maritima). Portrait. Fair Island, Shetland Islands, Scotland, July.

Andy Trowbridge / Puffin (Fratercula arctica) in flight, with beak full of sand eels. Fair Island, Shetland Islands, Scotland, July.

Andy Trowbridge / Puffin (Fratercula arctica) standing on Sea thrift (Armeria maritima) with wings out stretched with a beak full of sand eels. Close-up portrait. Fair Island, Shetland Islands, Scotland, July.

Andy Trowbridge / Puffin (Fratercula arctica) sitting on Sea thrift (Armeria maritima) with beak full of sand eels. Close-up portrait. Fair Island, Shetland Islands, Scotland, July.

Andy Trowbridge / Atlantic Puffin (Fratercula arctica) in flight, coming into land with beak full of sand eels (Ammodytes tobianus). Fair Isle, Shetland Islands, Scotland, UK, July.

Markus Varesvuo / Guillemots (Uria aalge) in flight in snow, Vardo, Norway, March. Winner of 2nd Prize in the Nature (Single images) category of the World Press Photo Competition 2014.

Juan Carlos Munoz / Atlantic Puffin (Fratercula arctica) in flight, Svalbard, Norway, June.

Paul D Stewart / Great Auk (Pinguinus impennis) from the Rev. Francis Orpen Morris' 'A History of British Birds' by the printer Benjamin Fawcett circa 1853. Morris was instrumental in founding the Royal Society for th...

Danny Green / Little Auks (Alle alle) flying low above surface in front of iceberg. Spitsbergen, Svalbard, Norway, July 2010. Highly commended in the Birds category in the GDT competition 2011.

Wild Wonders of Europe / de la Lez / Little auk (Alle alle) calling, Fuglesangen, Svalbard, Norway, June 2008

Wild Wonders of Europe / Liodden / Little auk (Alle alle) stretching wings on rock, Spitsbergen, Svalbard, Norway, June 2009

David Tipling / Atlantic Puffin {Fratercula arctica} with Sandeels in beak, Scotland, UK.

Solvin Zankl / Puffin {Fratercula arctica} landing with sandeels in beak, Orkney, Scotland, UK 2006

David Tipling / Puffin flapping wings at sunset {Fratercula arctica} Shetland, Scotland.

Pete Oxford / Puffin portrait {Fratercula arctica} Great Saltee Is, Republic of Ireland.

Rolf Nussbaumer / Puffin with sandeel, flapping wings {Fratercula arctica} Norway.

Hanne & Jens Eriksen / Little auks perched {Plautus alle} Svalbard, Norway

Pete Oxford / Puffin portrait, Fair Isle (Fratercula arctica) UK

Pete Oxford / Puffin carrying sand eels in beak (Fratercula arctica) Fair Isle, Shetland Isles Scotland

Pete Oxford / Puffin with sandeels in beak, Fair Isle (Fratercula arctica) UK Scotland

Colin Varndell / Puffin portrait {Fratercula arctica} UK

Pete Cairns / Puffin portrait {Fratercula arctica} Western Isles, Scotland, UK

Bristol City Museum / Great auk specimen - seabird hunted to extinction mid 19th century {Pinguinnus impennis}

SIMON KING / Puffin, Staffa Island, Scotland.

Mike Potts / Little auk courtship behaviour {Plautus alle} Svalbard, Norway

John Cancalosi / Puffin (Fratercula arctic) calling. Scotland, UK, Europe

Bernard Castelein / Common guillemot with fish {Uria aalge} Farne Is, UK Northumberland

Hans Christoph Kappel / Puffin in flight, Farne Is (Fratercula arctica) Northumberland.

Hans Christoph Kappel / Puffins on Farne Islands (Fratercula arctica) Northumberland

David Kjaer / Puffin in flight with sand eels in beak {Fratercula arctica} Farne Is, Northumberland, UK

David Tipling / Puffin flapping wings {Fratercula arctica} Shetland, Scotland, UK

Pete Oxford / Puffin with head tucked in wing, Fair Isle, Scotland

John Cancalosi / Puffin with sandeels. England

George Sanker / Razorbill (Alca torda) in flight. Machias Seal Island, Maine, USA / New Brunswick, Canada. July.

George Sanker / Atlantic puffin (Fratercula arctica) landing, wings outstretched. Machias Seal Island, off the coast of Maine, USA. July. This island is disputed between USA and Canada.

Mike Read / Razorbill (Alca torda) two fighting for nesting location on a grassy cliff top, Lunga Island, Treshnish Isles, Inner Hebrides, Scotland, UK, May.

Mike Read / Razorbill (Alca torda) on a grassy cliff top, Lunga Island, Treshnish Isles, Inner Hebrides, Scotland, UK, May.

Staffan Widstrand / Atlantic Puffin (Fratercula arctica) flapping wings, Hornoya Island, Varanger peninsula, Arctic Norway