Markus Varesvuo / White-tailed Eagle (Haliaeetus albicilla) mobbed by common gull (Larus canus) Flatanger, Norway, July

Markus Varesvuo / White-tailed Sea Eagle (Haliaeetus albicilla) being attacked by a Common Gull (Larus canus) in flight. Norway, July. Magic Moments book plate, page 50.

Markus Varesvuo / White-tailed Sea Eagle (Haliaeetus albicilla) being attacked by a Common Gull (Larus canus) in flight. Norway, July. Magic Moments book plate, page 51.

Wild Wonders of Europe / Muñoz / Common gull (Larus canus) tracks on Luskentyre Banks, South Harris Island, Outer Hebrides, Scotland, UK, June 2009

Wild Wonders of Europe / Peltomäki / Common gull (Larus canus) diving in flight, Texel, Netherlands, May 2009

Tom Vezo / Common / Mew gull {Larus canus} portrait on a rock, USA.

Tom Vezo / Three Common / Mew gull {Larus canus} chicks standing in water, USA.

Tom Vezo / Common/ Mew gull {Larus canus} chick, Alaska

Markus Varesvuo / White-tailed Eagle (Haliaeetus albicilla) mobbed by common gull (Larus canus) Flatanger, Norway, July

Juan Manuel Borrero / Illustration of seagulls. Caspian Gull (Larus cachinans), Audouinas Gull (Larus audouinii), Common Black-headed Gull (Chroicocephalus ridibundus). Pencil, watercolor and pastel illustration

Juan Manuel Borrero / Illustration of threatened species of birds of Spain. Iberian Guillemot (Uria aalge ibericus), Cantabrian capercallie (Tetrao urogallus cantabricus), White backed woodpecker (Dendrocopos leucotos), Be...

Ingo Arndt / Mew Gull (Larus canus) pair on nest, Cook Inlet, Alaska

Mark Carwardine / Two Common / Mew gulls (Larus canus) on ice floe, Tracy Arm, South East Alaska, USA

Erlend Haarberg / Two Mew / Common gulls (Larus canus) one pecking other, Finnmark, Norway, May

Erlend Haarberg / Two Common / Mew gulls (Larus canus) one standing on rock, the other sitting, Ovre-Pasvik National Park, Finnmark, Norway, May

Markus Varesvuo / Common gull (Larus canus) feeding two young chicks, Finland April

Loic Poidevin / Common Gull (Larus canus) on its nest on pebbles. Breton Marsh, French Atlantic Coast, April.

Andrew Parkinson / Common gull (Larus canus) adult in its winter plumage 'long calling' straight toward the photographer, Norfolk, UK, January.

Robert Thompson / Common gull (Larus canus) with chicks on rocks, Great Saltee Island, County Wexford, Republic of Ireland, June

Grzegorz Lesniewski / Common Gull (Larus canus) calling. Vistual River, Mazovia, Poland, May.

Grzegorz Lesniewski / Common Gull (Larus canus) nest with eggs. Vistual River, Mazovia, Poland, May.

Nick Upton / Common Gull (Larus canus) in winter plumage flying against blue sky. Wiltshire, UK, March.

Markus Varesvuo / Common Gull (Larus canus) with its prey of a Redshank chick (Tringa totanus) . Uto, Finland, July.

Ernie Janes / Common gull (Larus canus) on water, Norfolk, UK, winter plumage

Ernie Janes / Common gull (Larus canus) calling, UK

Robert Thompson / Common gull (Larus canus) chick by a lichen-covered rock. Little Saltee Island, of Kilmore Quay, County Wexford, Republic of Ireland, June.

Robert Thompson / Guilletmot (Uria allge) colony on coastal rocks with a gull flying overhead. Great Saltee Island, Kilmore Quay, County Wexford, Republic of Ireland, June.

Robert Thompson / Common gull (Larus canus) chicks by a lichen-covered rock. Little Saltee Island, of Kilmore Quay, County Wexford, Republic of Ireland, June.

Robert Thompson / Guilletmot (Uria allge) colony on coastal rocks with a gull flying overhead. Great Saltee Island, Kilmore Quay, County Wexford, Republic of Ireland, June.

Fabrice Cahez / Great Cormorant (Phalacrocorax carbo) swallowing a large fish as a gull looks on. River Allier, France, November.

Ernie Janes / Jackdaw (Corvus monedula) being attacked by Common Gull (Larus canus) (winter plumage). UK, March.

Fergus Gill / Herring gull (Larus argentatus) trying to steal eggs from a Common guillemot colony (Uria aalge). Fowlsheugh, Scotland, June .

Fergus Gill / Herring gull (Larus argentatus) stealing an egg from a Common guillemot colony (Uria aalge). Fowlsheugh, Scotland, June .

Roger Powell / Common Gull (Larus canus) incubating on purpose built nesting platform. These "nestboxes" were originally placed to encourage gulls to nest near dwellings in order to harvest their eggs as food : but...

Roger Powell / Common Gull (Larus canus) incubating on purpose built nesting platform. These nestboxes were originally placed to encourage gulls to nest near dwellings in order to harvest their eggs as food : but th...

Alan Williams / Colony of Guillemots (Uria aalge) on cliff-top watching gull close overhead, Puffin Island, North Wales, UK, June 2010

Hanne & Jens Eriksen / Common gull {Lanus canus} on nest in metal mooring hoops at harbour, Denmark, June

Robin Chittenden / Common gull (Larus canus) on water, Norfolk, UK, January, first winter plumage.

Robin Chittenden / Two Common gulls (Larus canus) on water, Norfolk, UK. January, adults, winter plumage

Robin Chittenden / Common gull (Larus canus) in flight, Norfolk, UK, January, first winter plumage

Suzi Eszterhas / Mew Gull (Larus canus), Katmai National Park, Alaska

Gerrit Vyn / Adult Mew Gull (Larus canus) flying in breeding plumage. Seward Peninsula, Alaska, USA, June.

Guy Edwardes / Common gull (Larus canus) standing on post, Kyle of Lochalsh, Highland Region, Scotland, May

Adrian Davies / Broken egg of Common guillemot {Uria aalge} predated by Lesser Black Backed Gull, South Stack, Anglesey, North Wales, UK

Juan Carlos Munoz / Greater black backed gull (Larus marinus) chasing off a Common crow (Corvus corax) Lokka lake, Finland, April 2008

Alan Williams / Common gull (Larus canus) perched on groyne post, Isle of Sheppey, Kent, UK, November

Alan Williams / Common gull (Larus canus) calling perched on groyne post, Isle of Sheppey, Kent, UK, November

Winfried Wisniewski / Common Tern (Sterna hirundo) and Black-headed Gulls (Chroicocephalus ridibundus) at combined rookery, Netherlands

Steve Knell / Common gull (Larus canus) adult in winter plumage feeding in shallow water, Norfolk, England, January

Steve Knell / Common gull (Larus canus) adult in winter plumage stood in shallow water, Norfolk, England, January

Steve Knell / Common gull (Larus canus) adult in flight in winter plumage, Norfolk, England, January

Steve Knell / Common gull (Larus canus) adult in winter plumage stood in shallow water, with Black-headed gull (Larus ridibundus) in background, Norfolk, England, January

Roger Powell / Common Gull {Larus canus} flying along high tideline feeding area, Varanger, Norway

Roger Powell / Common Gull {Larus canus} in flight, Varanger, Norway

Graham Eaton / Common / Mew Gull (Larus canus) perched on rock, Alaska, USA, June

Suzi Eszterhas / Harbour / Common seal {Phoca vitulina} female with newborn pup after giving birth, California, USA

Winfried Wisniewski / White-tailed Eagle (Haliaeetus albicilla) trying to catch a fish while a Mew Gull (Larus canus) tries to steal the prey, Norway

Winfried Wisniewski / Mew Gull (Larus canus) catching a fish in flight, Lake Luzin, Germany

Dietmar Nill / Common Gull (Larus canus) in flight with fish in beak, Germany

Roger Powell / Tractor ploughing stubble field followed by mixed flock of Common Starlings, Black-headed Gulls and Carrion Crows, Northumberland, UK

David Kjaer / Common Gull (Larus canus) adult in winter plumage, flight, Poland

Roger Powell / Close-up of Common gull eggs {Larus canus} in nest, Lochaber, Scottish Highlands

Niall Benvie / Common gull {Larus canus} vocalising, early morning, May, Trønelag, Norway

Niall Benvie / Common gull {Larus canus} vocalising, morning, May, Trønelag, Norway

Niall Benvie / Common gulls {Larus canus} warning off intruder, May, Trønelag, Norway

Niall Benvie / Common gull {Larus canus}, May, Songli, Sør-Trøndelag, Norway

Niall Benvie / Common gull {Larus canus}, May, Trønelag, Norway

Niall Benvie / Common gull {Larus canus} pair vocalising, May, Songli, Sør-Trøndelag, Norway

Niall Benvie / Common gull {Larus canus} vocalising, early morning, May, Trønelag, Norway

Niall Benvie / Common gull {Larus canus} about to drink, May, Trønelag, Norway

Niall Benvie / Common gull {Larus canus} pair vocalising, May, Songli, Sør-Trøndelag, Norway

Niall Benvie / Common gull {Larus canus}, May, Trønelag, Norway

Niall Benvie / Common gull {Larus canus} pair, May, Songli, Sør-Trøndelag, Norway

Niall Benvie / Common gull {Larus canus} pair vocalising, May, Songli, Sør-Trøndelag, Norway

Niall Benvie / Common gulls {Larus canus} mating, May, Trønelag, Norway

Niall Benvie / Two Common gulls {Larus canus} perched on rock in a lake, May, Trønelag, Norway

Niall Benvie / Common gull {Larus canus}, May, Songli, Sør-Trøndelag, Norway

Niall Benvie / Common gull {Larus canus}, May, Trønelag, Norway

Niall Benvie / Common gull {Larus canus}, May, Songli, Sør-Trøndelag, Norway

Ingo Arndt / Mew Gull (Larus canus) with captured fish, Germany

Ingo Arndt / Mew Gull (Larus canus) with captured fish, Germany

Ingo Arndt / Mew Gull (Larus canus) flying, Germany

Tom Vezo / Mew Gull (Larus canus) silhouetted at sunset in La Jolla, California

Tom Vezo / Mew Gull (Larus canus) pair silhouetted at sunset in La Jolla, California

Tom Vezo / Mew Gull (Larus canus) group silhouetted at sunset in La Jolla, California

Pete Oxford / Pacific Green Sea Turtle (Chelonia mydas agassizi) hatchling being taken by a Lava Gull (Larus fuliginosus), Tortuga Bay, Santa Cruz Island, Galapagos Islands, Ecuador

Roger Powell / Common Gull (Larus canus) calling, Varangerfjord, Arctic Norway

David Tipling / Common Gull {Larus canus} 1st winter plumage, landing, Northumberland, UK

Pete Cairns / Peregrine falcon (Falco peregrinus) feeding on Common gull in winter, Cairngorms National Park, Scotland, UK - falconer's bird

Pete Cairns / Peregrine falcon (Falco peregrinus) feeding on Common gull in winter, Cairngorms National Park, Scotland, UK - falconer's bird

Pete Cairns / Peregrine falcon (Falco peregrinus) feeding on Common gull in winter, Cairngorms National Park, Scotland, UK- falconer's bird

George McCarthy / Comon gull {Larus canus} ground nest with chicks, Varanger Peninsula, Norway

Dietmar Nill / Common gull {Larus canus} catching fish, Sweden.

Dietmar Nill / Common gull {Larus canus} catching fish.

Dietmar Nill / Common gull catching fish {Larus canus} Sweden