Ismaele Tortella / Black-legged kittiwake (Rissa tridactyla) nesting above a window, Lofoten, Norway, August.

Tony Heald / Glaucous Gull (Larus hyperboreus) taking off from ice, Svalbard Norway, July.

Espen Bergersen / Humpback whale (Megaptera novaeangliae) diving. In background a diving boat and 3 divers visible in the water. Kvanangen, Troms, Norway. November

Espen Bergersen / Herring (Clupea harengus) caught in fishing net. Gulls in the net are taking of and flying around, shot with long shutter speed. Norway. December. November

Espen Bergersen / Killer whales / orcas (Orcinus orca). Spyhopping. Kvaloya, Troms, Norway November

Espen Bergersen / Gulls and Killer whales / orcas (Orcinus orca) feeding on herring. Kvaloya, Troms, Norway October

Espen Bergersen / Aerial shot of a fishing boat catching Atlantic herring (Clupea harenguis), with Killer whales (Orcinus orca) and Humpback whales (Megaptera novaeangliae) swimming around the boat and large numbers of...

Espen Bergersen / Aerial shot of a fishing boat catching Atlantic herring (Clupea harenguis), with Killer whales (Orcinus orca) and Humpback whales (Megaptera novaeangliae) swimming around the boats and large numbers o...

Marie Read / Arctic terns (Sterna paradisaea), two in flight over nesting colony in field of buttercups (Ranunculus sp.), Keflavik, Iceland. Digital canvas expansion.

Avi Meir/ BIA / Slender-billed Gull (Larus genei) landing, Eilat, Israel

John Chan / Elegant tern (Thalasseus elegans) with a broken wing, attempting to take off, Southern California, USA, April.

John Chan / Western gulls (Larus occidentalis) attacking an Elegant tern (Thalasseus elegans) with a broken wing, Southern California, USA, April.

John Chan / Western gull (Larus occidentalis) feeding on a California two-spot octopus (Octopus bimaculoides) on a mudflat at low tide, Southern California, USA, November.

Oscar Dewhurst / Black-legged kittiwake (Rissa tridactyla) adult perched on the side of the Tyne Bridge, overlooking Newcastle and the Tyne. Newcastle, UK. July

Oscar Dewhurst / Black-legged kittiwake (Rissa tridactyla) adults and chicks on nests on the Tyne Bridge. Newcastle, UK. July.

Agustin Esmoris / Southern Right Whale (Eubalaena australis) surfacing with Kelp Gull (Larus dominicanus) picking off lice, Chubut, Argentina, sequence 1 of 4

Markus Varesvuo / Herring Gull (Larus argentatus) close up of juvenile in flight, Flatanger, Norway, October.

Tui De Roy / Swallow-tailed gull (Creagrus furcatus) Plazas Island, Galapagos

Tui De Roy / Swallow-tailed gull (Creagrus furcatus) calling, Genovesa Island, Galapagos

Tui De Roy / Swallow-tailed gull (Creagrus furcatus) in flight, Genovesa Island, Galapagos

Dave Bevan / Juvenile Herring gull (Larus argentatus) pecking a suckling Grey seal (Halichoerus grypus) pup, Norfolk, England, UK. December.

Ingo Arndt / Glaucous winged gull (Larus glaucescens) calling, Lake Clark National Park, Alaska, USA, August

Hiroya Minakuchi / Humpback Whale (Megaptera novaeangliae) pair gulp feeding and gulls hunting Northern Anchovy (Engraulis mordax), Monterey Bay, California

Bence Mate / Herring gull (Larus argentatus) mobbing White tailed sea eagle (Haliaeetus albicilla) with fish prey, Lake Csaj, Kiskunsagi National Park, Hungary. March.

Bence Mate / Caspian gulls (Larus cachinnans) juveniles fighting, Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary. March.

Bence Mate / Black headed gull (Chroicocephalus ridibundus) in flight, blurred motion, Kiskunsagi National Park, Pusztaszer, Hungary. June.

Bence Mate / Black headed gull (Chroicocephalus ridibundus) taking off with foot caught in discarded coat hanger, Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary. May. Awarded in Wildlife Photojournalist:...

Matthias Breiter / Humpback Whale (Megaptera novaeangliae) group gulp feeding, Alaska

Matthias Breiter / Humpback Whale (Megaptera novaeangliae) group gulp feeding, Alaska

Matthias Breiter / Humpback Whale (Megaptera novaeangliae) group gulp feeding, Alaska

Michel Poinsignon / Black headed gull (Chroicocephalus ridibundus) taking off, detail of legs and water droplets, Pusztaszer, Hungary, April

Espen Bergersen / Gulls (Laridae) seaching for food in water containing blood coming from a large fishing boat, Tromvik, Kvaloya, Troms, Norway, November 2014.

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...

Pal Hermansen / Kittiwake (Rissa tridactyla) breeding on house wall, Norway, March.

Staffan Widstrand / Kittiwakes (Rissa tridactyla) nesting on wall of house, Vardo town, Varanger Peninsula, Norway, March.

Espen Bergersen / Kittiwakes (Rissa tridactyla) squabbling on ice. Svalbard, Norway. July

Nick Upton / Adult Herring gull (Larus argentatus) scavenging left over food, St.Ives, Cornwall, UK, June. Editorial use only.

Nick Upton / Adult Herring gull (Larus argentatus) walking among sunbathers on beach, St.Ives, Cornwall, UK, June. Editorial use only.

Ole Jorgen Liodden / Ivory gull (Pagophila eburnea) behind Polar bear (Ursus maritimus) framed by its legs, Svalbard, Norway, July.

Alan Murphy / Glaucous Gull (Larus hyperboreus) striking at a fish while in flight, British Columbia, Canada

Rob Drummond / Silver Gull (Larus novaehollandiae) flying, Victoria, Australia

Avi Meir / White-eyed Gull (Larus leucophthalmus) flying, Eilat, Israel

Pete Oxford / Swallow-tailed Gull (Creagrus furcatus) flying, Galapagos Islands, Ecuador

Ole Jorgen Liodden / Ivory gull (Pagophila eburnea) behind Polar bear (Ursus maritimus), Svalbard, Norway, July.

Erlend Haarberg / Black-legged kittiwakes (Rissa tridactyla) fighting mid air, Hornoeya. Finnmark, Norway, July.

Espen Bergersen / Humpback whales (Megaptera novaeangliae) and Killer whale (Orcinus orca) feeding on a bait ball of Herring. Andfjorden close to Andoya, Nordland, Northern Norway. January.

Ben Cranke / European Herring Gull (Larus argentatus) landing on the waters of a fjord, Norway, May.

Ben Cranke / European Herring Gulls (Larus argentatus) in flight at sunset Norway, May.

Ben Cranke / European Herring Gull (Larus argentatus) taking off, Norway, May.

Will Bolton / 2020VISION / Truck dumping rubbish at landfill site with mixed flock of Gulls (Larus sp.) flying overhead, Pitsea, Essex, England, UK, November 2011.

Will Bolton / 2020VISION / Machinery working on a landfill site with mixed flock of Gulls (Larus sp.) flying overhead, Pitsea, Essex, England, UK, November 2011.

Will Bolton / 2020VISION / Mixed flock of Gulls (Larus sp.) flying over and scavenging on a pile of rubbish on a landfill site, Pitsea, Essex, England, UK, November 2011.

Will Bolton / 2020VISION / Truck dumping rubbish at landfill site with mixed flock of Gulls (Larus sp.) scavenging on rubbish, Pitsea, Essex, England, UK, November 2011.

Will Bolton / 2020VISION / Truck dumping rubbish at landfill site with mixed flock of Gulls (Larus sp.) flying overhead, Pitsea, Essex, England, UK, November 2011.

Will Bolton / 2020VISION / Panning shot across a landfill site with working machinery and mixed flock of Gulls (Larus sp.) and Common starlings (Sturnus vulgaris) flying overhead, Pitsea, Essex, England, UK, November 2011.

Ernie Janes / Black headed gull (Larus ridibundus) in winter plumage, Titchwell RSPB reserve, Norfolk, England, UK, December.

Chris & Monique Fallows / Stormy seas in Kalk Bay harbour, False Bay, Cape Town, South Africa.

Chris & Monique Fallows / Storm sending spray over pier, Kalk Bay harbor, False Bay, Cape Town, South Africa.

Chris & Monique Fallows / Storm waves sending spray over pier, Kalk Bay harbor, False Bay, Cape Town, South Africa.

Chris & Monique Fallows / Storm over Kalk Bay harbor with boat, False Bay, Cape Town, South Africa.

Jeff Rotman / Fishermen clean Atlantic Cod (Gadus morhua) on deck of fishing trawler, with herring gulls (Larus argentatus) flocking in the background. Stellwagen Banks, New England, United States, North Atlantic O...

Ben Hall / Black headed gull (Chroicocephalus ridibundus) taking flight, artistically blurred photograph. Cheshire, UK, October. Highly honoured in the Art in Nature category of the Nature's Best Windland Smith...

Ben Hall / Black-headed gull (Larus ridibundus) alighting on water at dawn, Cheshire, UK, November. Highly Commended in the British Wildlife Photography Awards (BWPA) competition 2013.

Ben Hall / Black-headed gull (Chroicocephalus ridibundus) in flight, artistically blurred photograph, Cheshire, UK, February. Highly Commended in the British Wildlife Photography Awards (BWPA) competition 2013....

Juan Carlos Munoz / Two juvenile Atlantic yellow legged gulls (Larus michahellis) in flight, Izmir, Turkey, October.

Markus Varesvuo / Kittiwake (Rissa tridactylus) vocalising, Vardo, Norway, March.

Markus Varesvuo / Large flock of Kittiwakes (Rissa tridactyla) flying over the sea, Vardo, Norway, March.

Theo Bosboom,Theo Bosboom / Gulls, predominantly Iceland gulls (Larus glaucoides) flying above stormy ocean near Vik, Iceland, March 2012.

Cyril Ruoso / Black-legged Kittiwake (Rissa tridactyla) female on nest with young, Latrabjarg Cliff, West Fjords, Iceland

Flip Nicklin / Humpback Whale (Megaptera novaeangliae) group gulp feeding, Auke Bay, Juneau, Alaska

Igor Shpilenok,Igor Shpilenok / Kamchatka Brown Bear (Ursus arctos beringianus) on the Pacific coast of Kamchatka. Kronotsky Zapovednik Nature Reserve, Kamchatka Peninsula, Russian Far East, July.

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...

Ole Jorgen Liodden / Pacific Gull (Larus pacificus) Tasmania. December.

Claudio Contreras / Heermann's Gull (Larus heermanni) in flight, Ensenada, Baja California Peninsula, Mexico, December.

Claudio Contreras / Heermann's Gulls (Larus heermanni) in flight. Ensenada, Baja California Peninsula, Mexico, December.

David Pattyn / Black-headed gull (Chroicocephalus ridibundus) in flight above Wadden sea, Terschelling Island, The Netherlands, June

Andrew Parkinson / Black-headed gull (Chroicocephalus ridibundus) adult in winter plumage, taking off at dawn from tranquil lake. (Non-ex) Derbyshire, UK. Highly commended, GDT competition 2012, Nature's studio categor...

Merryn Thomas / Portrait of Gull (Laridae) on board the Ardrossan to Brodick Ferry, Scotland, August 2011.

Erlend Haarberg / Kittiwake (Rissa tridactyla) in flight over beach, Iceland, May

Roy Mangersnes / Glaucious gull (Larus hyperboreus) flying against a blue glacier front, Spitsbergen, Svalbard, Norway, September

Roy Mangersnes / Black-legged kittiwakes (Rissa tridactyla) in flight during evening snowfall, Northern Nordaustlandet, Svalbard, Norway, August

Roy Mangersnes / Herring gull (Larus argentatus) in flight with others on water, Norway, July

Roy Mangersnes / Black-legged kittiwakes (Rissa tridactyla) on an old building including one landing, Finnmark, Norway, April

Roy Mangersnes / Juvenile Black-legged kittiwake (Rissa tridactyla) flying over Raudfjorden, North-western tip of Spitsbergen, Svalbard, Norway, September

Chris Gomersall / 2020VISION / Adult Kittiwake (Rissa tridactyla) in winter plumage in flight alongside the pelagic trawler 'Charisma', Shetland Isles, Scotland, UK, October

Chris Gomersall / 2020VISION / Northern gannet (Sula bassana) being mobbed by immature Great black-backed gull (Larus marinus), Shetland Islands, Scotland, UK, October

Chris Gomersall / 2020VISION / Mixed flock of Northern gannets (Morus bassanus) and gulls (Larus) feeding in the wake of the pelagic trawler "Charisma." Shetland Isles. October 2011.

Laurie Campbell / Black-headed gulls (Larus ridibundus) robbing Puffin (Fratercula arctica) of catch, Farne Islands, Northumberland, England, June

Terry Whittaker / 2020VISION / Lesser black-backed gulls (Larus fuscus), Herring gulls (Larus argentatus), Black-headed gulls (Larus ridibundus) and Starlings (Sturnus vulgaris) feeding on landfill site, Pitsea, Essex, England, UK,...

Terry Whittaker / 2020VISION / Mixed flock of Gulls (Larus sp.) flying over a landfill site, Pitsea, Essex, England, UK

Terry Whittaker / 2020VISION / Mixed flock of Gulls (Larus sp.) flying over landfill site, Pitsea, Essex, UK, November 2011

Terry Whittaker / 2020VISION / Lesser black-backed gulls (Larus fuscus), Herring gulls (Larus argentatus), Black-headed gulls (Larus ridibundus) and Starlings (Sturnus vulgaris) feeding on landfill site, Pitsea, Essex, England, UK,...

Terry Whittaker / 2020VISION / Lesser black-backed gulls (Larus fuscus), Herring gulls (Larus argentatus), Black-headed gulls (Larus ridibundus) and Starlings (Sturnus vulgaris) feeding on landfill site, Pitsea, Essex, England, UK,...

Peter Cairns / 2020VISION / Herring gull (Larus argentatus) standing on the roof of a car, Portree, Skye, Scotland, UK, June