Diet Overlap

Gavia arctica (Black-throated Loon)
Larus argentatus (Herring Gull)

Common Diet

Gadus morhua (rock cod)

Common Habitat

Alaska Maritime National Wildlife Refuge
Aleutian Islands Biosphere Reserve
ANSE DU FIER D'ARS EN RE
Archipel de Glénan
Atlantic mixed forests
Baie de Morlaix
Baltic mixed forests
Barguzinskiy Biosphere Reserve
Belovezhskaya Pushcha Biosphere Reserve
Berezinskiy Zapovednik
Cabo Busto-Luanco
Caledon conifer forests
Cape Cod National Seashore
Celtic broadleaf forests
Central Asian riparian woodlands
Central European mixed forests
Central Korean deciduous forests
Channel Islands National Marine Sanctuary
Channel Islands National Park
Chausey
Cherskii-Kolyma mountain tundra
Chukchi Peninsula tundra
Darvinsky Zapovednik
East Siberian taiga
Emin Valley steppe
English Lowlands beech forests
Estuaire de la Loire - Baie de Bourgneuf
Florida Keys National Marine Sanctuary
Flusslandschaft Elbe Biosphere Reserve
Foret Domaniale du Circeo
Forêts et étangs d'Argonne et vallée de l'Ornain
Galata
Golden Gate National Recreation Area
Grande Brière, marais de Donges et du Brivet
Great Lakes Basin desert steppe
Hailuoto, pohjoisranta
Hällörsfjärden
Hokkaido deciduous forests
Hokkaido montane conifer forests
Inner Galway Bay SPA
Isle of Rum National Nature Reserve
Isomatala-Maasyvänlahti
Ivalojokisuisto
Japan
Joutsenaapa - Kaita-aapa
Juortanansalon alue
Kamchia Complex
Karadagskiy Zapovednik
Karkonosze
Kauhaneva-Pohjankangas (SPA)
Kazakh forest steppe
Kazakh semi-desert
Kazakh steppe
Kazakh upland
Khangai Mountains conifer forests
Khazar Zapovednik
Kirkkonummen saaristo (SPA)
Kivach Zapovednik
Kivijärvi
Kronotskiy Biosphere Reserve
Kustbroedvogels te Zeebrugge-Heist
Lac du Der
Lacs de la forêt d'Orient
Lago di Mezzola e Pian di Spagna
Laidauredeltat
Lake Mead National Recreation Area
Lake Torne Area
Laplandskiy Biosphere Reserve
LITTORAL SEINO-MARIN
Loch Maree Complex
Luodon saaristo
Manchurian mixed forests
Mandra - Poda
Marais du Mès, baie et dunes de Pont-Mahé, étang du Pont de Fer, île Dumet
MARAIS POITEVIN
Marais salants de Guérande, traicts du Croisic, dunes de Pen Bron
Marchesato e Fiume Neto
MARTIMOAAPA-LUMIAAPA-PENIKAT
Millesvik och Lurö skärgård
Mor Braz
Moray Firth
Mountains of Central Asia
Neusiedler See-Osterreichischer Teil
Niederung der Unteren Havel
Nihonkai evergreen forests
Nihonkai montane deciduous forests
Niittysuo-Siiransuo
North America
North Atlantic moist mixed forests
North Bull Island
North Norfolk Coast
North Norfolk Coast Biosphere Reserve
Northeast China Plain deciduous forests
Northeast Siberian coastal tundra
Northeast Siberian taiga
Northwest Russian-Novaya Zemlya tundra
NSG Urmitzer Werth
Ohtosensuo
Ojakylänlahti ja Kengänkari
Okskiy Biosphere Reserve
Ostrov Vrangelya (Wrangel Island) Zapovednik
Ouessant-Molène
Padre Island National Seashore
Pechoro-Ilychskiy Biosphere Reserve
Penarronda-Barayo
PERTUIS CHARENTAIS - ROCHEBONNE
Pieni- ja Suuri-Rautjärvi
Point Reyes National Seashore
Polar Bear Provincial Park
Pontic steppe
Prespa National Park
Pudasjärvi
Puszcza Kampinoska
Pyhäjärvi
Queen Maud Gulf Bird Sanctuary
Ramsar-Gebiet S-H Wattenmeer und angrenzende Küstengebiete
Reserva de la Biosfera de Urdaibai
Reserve de la Biosphere d'Iroise
Reserve Nationale de Camargue Biosphere Reserve
Ría de Villaviciosa
Ría del Eo
Rimpijärvi-Uusijärvi
Rocky Mountain Biosphere Reserve
Rödkallen-SörÄspen
Ropotamo Complex
Ruegen
Rumala - Kuvaja - Oudonrimmet
Ruosuo-Isosuo
Sarmatic mixed forests
Sayan Alpine meadows and tundra
Sayan Intermontane steppe
Sayan montane conifer forests
Säynäjäsuon - Matalasuon alue
Scandinavian and Russian taiga
Scandinavian coastal conifer forests
Scandinavian Montane Birch forest and grasslands
Schaalsee
Schorfheide-Chorin
Secteur marin de l'île d'Yeu jusqu'au continent
Seevogelschutzgebiet Helgoland
Sefton Coast
Selenge-Orkhon forest steppe
Shabla Lake Complex
Siikajoen lintuvedet ja suot
Sikhote-Alinskiy Biosphere Reserve
Sokhondinskiy Biosphere Reserve
South Siberian forest steppe
Southern Korea evergreen forests
SPA Östliche Deutsche Bucht
SPA Pommersche Bucht
Spreewald
St. Kilda National Nature Reserve
Sumusuo
Suuripään alue
Taiheiyo evergreen forests
Taiheiyo montane deciduous forests
Taimyr-Central Siberian tundra
Taimyrsky Biosphere Reserve
Teuravuoma-Kivijärvenvuoma
Tian Shan foothill arid steppe
Tian Shan montane conifer forests
Tian Shan montane steppe and meadows
Törmäsenrimpi-Kolkanneva
Trans-Baikal Bald Mountain tundra
Trans-Baikal conifer forests
Tsentral'no-Sibirskiy Biosphere Reserve
Tyräsuo
Ubsunurskaya Kotlovina (Ubsunur Depression)
Ujscie Wisly
Unteres Odertal
Ural montane forests and tundra
Urdaibaiko Itsasadarra / Ría de Urdaibai
Val d'Allier Bourbonnais
VALLEE DU RHIN D'ARTZENHEIM A VILLAGE-NEUF
Valli del Mincio
Värmlandsskärgården
Varna-Beloslav Lakes Complex
Vättern (östra)
Waddensea Area
Waddensea of Schleswig-Holstein
West Siberian taiga
Western European broadleaf forests
Western Siberian hemiboreal forests
Yamal-Gydan tundra
Ylä-Keitele
Zhrebchevo Reservoir

Attributes / relations provided by
♦ 1del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
♦ 2Diets of adult and chick Herring Gulls Larus argentatus argenteus on Ailsa Craig, south-west Scotland., M. Nogales, B. Zonfrillo and P. Monaghan, SEABIRD 17: 56-63