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

Loic Poidevin / Common gull (Larus canus) and Black-headed gull (Chroicocephalus ridibundus) group perched on branch. Finland. May.

Nick Upton / Black-headed gulls (Chroicocephalus ridibundus), Common gull (Larus canus) and Lesser black-backed gulls (Larus fuscus) resting on a frozen lake, Wiltshire, UK, February.

Werner Bollmann / Mew gull (Larus canus) resting on rock, Hallefors, Sweden, June.

Ernie Janes / Common gull (Larus canus) and Black headed gull (Chroicocephalus ridibundus) squabbling over fence post for perching, Norfolk, England, UK, February.

Ernie Janes / Common gull (Larus canus) in flight over coastal creek, Norfolk, England, UK, February.

Ernie Janes / Common gull (Larus canus) calling on shoreline, in snow storm Norfolk, England, UK. Snowfall digitally added.

Roger Powell / Carrion crow (Corvus corone) pursuing a Mew gull (Larus canus) carrying a frog in its beak. Kolvik, Porsanger fjord, Finnmark, Norway, May.

Ingo Arndt / Common Gull (Larus canus) flying, about to land on water, Norway

Ingo Arndt / Common Gull (Larus canus) taking off from water with fish in its beak, Norway

Ingo Arndt / Common Gull (Larus canus) taking off from water with fish in its beak, Norway

Roger Powell / Common gull (Larus canus) incubating on nest, Porsanger fjord, Finmark, Norway

Roger Powell / Common gull (Larus canus) incubating in a nesting tray. These man-made structures were originally erected to ensure a fresh supply of eggs but are now part of a conservation programme.Porsanger fjord,...

Cyril Ruoso / Common gull (Larus canus) taking Common eider (Somateria mollissima) duck egg stolen by Herring gull (Larus argentatus) Lanan Island, Vega archipelago, Norway June

Jussi Murtosaari / Common gull (Larus canus) feeding on fish, Finland, May.

Gerrit Vyn / Adult Mew gull (Larus canus) in non breeding plumage. Monterey County, California. November.

Sven Zacek / Aerial view of a flock of Common gulls (Larus canus) flying over a freezing and steaming Daugava river on a very cold morning. Riga, Latvia. January 2014.

E.J. Peiker / Mew Gull (Larus canus), Alaska

Ernie Janes / Common gull (Larus canus) pair calling, Norfolk, January.

Ernie Janes / Black headed gulls (Larus ridibundus) and Common gull (Larus canus) in flight over marshes, England, January.

Ernie Janes / Common gull (Larus canus) landing on fence post, Norfolk, January.

Ernie Janes / Common gull (Larus canus) and yellow boat reflection, Norfolk, February.

Ernie Janes / Common gull (Larus canus) pair calling, Norfolk, January.

David Tipling / Common Gull (Larus canus) at breeding colony on moorland, Scotland, UK.

Markus Varesvuo / Two Common gulls (Larus canus) interacting on ice. Loviisa, Finland, April. Magic Moments book plate.

Markus Varesvuo / Common Gull (Larus canus) on snow, summer plumage. Kuusamo, Finland, May

MIKE READ / Common gull (Larus canus) adult in flight over Loch na Keal, Isle of Mull Argyll and Bute, Isle of Mull, Scotland, UK, May.

MIKE READ / Common gull (Larus canus) adult calling on grassland beside Loch na Keal, Isle of Mull Argyll and Bute, Scotland, UK, May.

Nick Upton / Common gulls (Larus canus) and Black-headed gulls (Chroicocephalus ridibundus) following two tractors tilling a field, near Eyebrook reservoir, Uppingham, Rutland, UK, November.

Nick Upton / Common gulls (Larus canus) and Black-headed gulls (Chroicocephalus ridibundus) following two tractors tilling a field, near Eyebrook reservoir, Uppingham, Rutland, UK, November.

Nick Upton / Common gulls (Larus canus) and Black-headed gulls (Chroicocephalus ridibundus) following a tractor tilling a field, near Eyebrook reservoir, Uppingham, Rutland, UK, November.

Nick Upton / Common gulls (Larus canus) and Black-headed gulls (Chroicocephalus ridibundus) following a tractor tilling a field, near Eyebrook reservoir, Uppingham, Rutland, UK, November.

Nick Upton / Common gulls (Larus canus), Black-headed gulls (Chroicocephalus ridibundus) and Lapwings (Vanellus vanellus) roosting at Eyebrook reservoir with more gulls resting on a winter wheat crop in the backgr...

Robin Chittenden / Black-headed gulls (Chroicocephalus ridibundus), Common gull (Larus canus) and Herring Gulls (Larus argentatus) flying over waves, Sea Palling, Norfolk, UK, March.

Robin Chittenden / Black-headed gulls (Chroicocephalus ridibundus), Common gull (Larus canus) and Herring Gulls (Larus argentatus) flying over breaking wave, Sea Palling, Norfolk, UK, March.

Jussi Murtosaari / Common Gull (Larus canus canus) nesting adult, Aland Islands, Finland, June.

Jussi Murtosaari / Common Gull (Larus canus canus) in flight, central Finland, April.

Jussi Murtosaari / Common Gull (Larus canus canus) in flight, Aland Islands, Finland, June.

Jussi Murtosaari / Common Gull (Larus canus canus) on coast, southern Finland, May.

Roger Powell / Juvenile White-tailed Eagle (Haliaeetus albicilla) being dive-bombed by a Common Gull (Larus canus) Varanger shore, Finmark, Norway, June.

Roger Powell / Juvenile White-tailed Eagle (Haliaeetus albicilla) being dive-bombed by a Common Gull (Larus canus) Varanger shore, Finmark, Norway, June.

Roger Powell / Common Gull ( Larus canus) preening. Varanger coastal plain, Finmark, Norway, June.

Ralph Martin / Common Gull (Larus canus) juvenile, Thurgau, Switzerland

Jacob S. Spendelow / Common Gull (Larus canus), Alaska

Ralph Martin / Common Gull (Larus canus), Schleswig-Holstein, Germany

Cheryl-Samantha Owen / California gulls (Larus californicus) and Mew gull (Larus canus) catching fish from a baitball near the surface. Johnstone Strait, East Coast, Vancouver Island, British Columbia, Canada, July.

Cheryl-Samantha Owen / California gulls (Larus californicus) and Mew gull (Larus canus) catching fish from a baitball near the surface. Johnstone Strait, East Coast, Vancouver Island, British Columbia, Canada, July.

Cheryl-Samantha Owen / Bald eagle (Haliaeetus leucocephalus) on rock removing Mew gull's (Larus canus) feathers before feeding, Knight Inlet, Vancouver Island, British Columbia, Canada, July.

Cheryl-Samantha Owen / Bald eagle (Haliaeetus leucocephalus) on rock removing Mew gull's (Larus canus) feathers before feeding, Knight Inlet, Vancouver Island, British Columbia, Canada, July.

Cheryl-Samantha Owen / Bald eagle (Haliaeetus leucocephalus) on rock removing Mew gull's (Larus canus) feathers before feeding, Knight Inlet, Vancouver Island, British Columbia, Canada, July.

Cheryl-Samantha Owen / Bald eagle (Haliaeetus leucocephalus) with Mew gull prey (Larus canus) Knight Inlet, Vancouver Island, British Columbia, Canada, July.

Robin Chittenden / Mediterranean (Larus melanocephalus), Black-headed (Chroicocephalus ridibundus) Common Gulls (Larus canus) in flight over near the shore, Norfolk, UK, March

Robin Chittenden / Mediterranean (Larus melanocephalus), Black-headed (Chroicocephalus ridibundus) Common Gulls (Larus canus) in flight over near the shore, Norfolk, UK, March

Robin Chittenden / Mediterranean (Larus melanocephalus), Black-headed (Chroicocephalus ridibundus) Common Gulls (Larus canus) in flight over near the shore, Norfolk, UK, March

Robin Chittenden / Mediterranean (Larus melanocephalus) Black-headed (Chroicocephalus ridibundus) and Common Gulls (Larus canus) flock in flight, Norfolk, UK, March

Robin Chittenden / Lesser Black-backed (Larus fuscus), Herring (Larus argentatus) Black headed (Chroicocephalus ridibundus) and Common Gulls (Larus canus) flying over the surf, Norfolk, UK, March

Robin Chittenden / Lesser Black-backed (Larus fuscus), Herring (Larus argentatus) Black headed (Chroicocephalus ridibundus) and Common Gulls (Larus canus) flying over the surf, Norfolk, UK, March

Bence Mate / Common gull {Larus canus} silhouette at sunset, Runde, Norway

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

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

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

Nick Upton / Mute swans (Cygnus olor), Mallards (Anas platyrhynchos), Black-headed gulls (Larus ridibundus) and Common gulls (Larus canus) on partially frozen Chew Valley Lake, Somerset, UK, January

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...

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

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

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