Diet Overlap

Podiceps grisegena (Red-necked Grebe)
Clangula hyemalis (Oldsquaw)

Common Diet

Ammodytes hexapterus (Stout sand lance)
Gasterosteus aculeatus (Alaskan stickleback)

Common Habitat

Acadia National Park
Alaska Maritime National Wildlife Refuge
Alaska-St. Elias Range tundra
Aleutian Islands Biosphere Reserve
Algonquin Provincial Park
Apostle Islands National Lakeshore
Arctic National Wildlife Refuge
Astrakhanskiy Biosphere Reserve
Atanasovsko ezero
Atlantic mixed forests
Baltic mixed forests
Banff National Park
Berezinskiy Zapovednik
Bering tundra
Beringia lowland tundra
Beringia upland tundra
Blackbeard Island National Wildlife Refuge
Bohai Sea saline meadow
Bruce Peninsula National Park
Caerlaverock National Nature Reserve
California Coast Ranges Biosphere Reserve
Camargue
Cape Breton Highlands National Park
Cape Cod National Seashore
Cape Hatteras National Seashore
Carmarthen Bay and Estuaries/ Bae Caerfyrddin ac Aberoedd
Carolinian-South Atlantic Biosphere Reserve
Caspian Hyrcanian mixed forests
Caucasus
Celtic broadleaf forests
Central European mixed forests
Central Gulf Coastal Plain Biosphere Reserve
Central Korean deciduous forests
Chesil and the Fleet
Chukchi Peninsula tundra
Dee Estuary/ Aber Dyfrdwy
DELTA NESTOU KAI LIMNOTHALASSES KERAMOTIS KAI NISOS THASOPOULA
Denali Biosphere Reserve
Dornoch Firth and Morrich More
Dungeness
Effigy Mounds National Monument
Elk Island National Park
Elkhorn Slough Preserve
Endla
English Lowlands beech forests
Farallon National Wildlife Refuge
Fathom Five National Marine Park
Fehmarnbelt
Forillon National Park
Fort Pulaski National Monument
Fundy National Park
Gateway National Recreation Area
Georgian Bay Islands National Park
Glacier Bay National Park and Preserve
Glen Canyon National Recreation Area
Golden Gate National Recreation Area
Gros Morne National Park
Haapajärvi-Säärystenjärvi
Hokkaido deciduous forests
Hokkaido montane conifer forests
Hortobágy National Park
Huang He Plain mixed forests
Interior Alaska-Yukon lowland taiga
Interior Yukon-Alaska alpine tundra
Isle Royale Biosphere Reserve
Isomatala-Maasyvänlahti
Ivvavik National Park
Japan
Jasper National Park
Jian Nan subtropical evergreen forests
Kaislanen
Kejimkujik Seaside Adjunct
Khazar Zapovednik
Kirkkonummen saaristo (SPA)
Kiskunsag Biosphere Reserve
Kivijärvi
Kluane National Park and Reserve
Kouchibouguac National Park
Kronotskiy Biosphere Reserve
Kuivasjärvi
Lake Superior Provincial Park
Laplandskiy Biosphere Reserve
Lehijärvi
LIMNES KAI LIMNOTHALASSES TIS THRAKIS - EVRYTERI PERIOCHI KAI PARAKTIA ZONI
LIMNES VISTONIS, ISMARIS - LIMNOTHALASSES PORTO LAGOS, ALYKI PTELEA, XIROLIMNI, KARATZA
Long Point Biosphere Reserve
Manchurian mixed forests
Mandra - Poda
Marais salants de Guérande, traicts du Croisic, dunes de Pen Bron
Mietoistenlahti
Minsmere to Walberswick Heaths and Marshes
Moray Firth
Mount Arrowsmith
Nahanni National Park Reserve
Neusiedler See-Osterreichischer Teil
Niagara Escarpment Biosphere Reserve
Nihonkai montane deciduous forests
North America
North Norfolk Coast
North Norfolk Coast Biosphere Reserve
Northeast China Plain deciduous forests
Northern transitional alpine forests
Oceania
Okskiy Biosphere Reserve
Olympic Biosphere Reserve
Pacific Coastal Mountain icefields and tundra
Pacific Rim National Park Reserve
Palava Protected Landscape Area
Paljassaare
Petolahdenjokisuisto
Pictured Rocks National Lakeshore
Point Reyes National Seashore
Pomorie Lake
Pukaskwa National Park
Puszcza Kampinoska
Redwood National Park
Reserve Nationale de Camargue Biosphere Reserve
Rocky Mountain Biosphere Reserve
Rondeau Provincial Park
Ropotamo Complex
Saaristomeri
Saguenay - St. Lawrence Marine Park
Saint Lawrence Islands National Park
Salajärvi-Ryönänlahti
San Juan Island National Historical Park
Sarmatic mixed forests
Scandinavian and Russian taiga
Scandinavian coastal conifer forests
Scandinavian Montane Birch forest and grasslands
Schorfheide-Chorin
Sefton Coast
Shabla Lake Complex
Siiksaare-Oessaare
Sikhote-Alinskiy Biosphere Reserve
South Atlantic Coastal Plain Biosphere Reserve
South Sakhalin-Kurile mixed forests
Southern Korea evergreen forests
SPA Pommersche Bucht
Spreewald
Srebarna
Tagamõisa
Tawas Point State Park
Torankijärvi
Tuusulanjärven lintuvesi
Ukkusiksalik National Park
Unteres Odertal
Upper Miss. River Nat'l Wildlife Refuge
Urdaibaiko Itsasadarra / Ría de Urdaibai
Valley Forge National Historical Park
Virginia Coast Biosphere Reserve
Viurilanlahti
Voyageurs National Park
Waterton Biosphere Reserve
Western European broadleaf forests
Wrangell-St. Elias National Park and Preserve
Yellowstone Biosphere Reserve
Zatoka Pomorska

Attributes / relations provided by
♦ 1Food Web Relationships of Northern Puget Sound and the Strait of Juan de Fuca : a Synthesis of the Available Knowledge, Charles A. Simenstad, Bruce S. Miller, Carl F. Nyblade, Kathleen Thornburgh, and Lewis J. Bledsoe, EPA-600 7-29-259 September 1979
♦ 2Winter feeding ecology and trophic relationships of Oldsquaws and White-winged Scoters on Kachemak Bay, Alaska, Gerald A. Sanger and Robert D. Jones, Jr., Canadian Wildlife Service, 1984
♦ 3Food web topology and parasites in the pelagic zone of a subarctic lake, Per-Arne Amundsen, Kevin D. Lafferty, Rune Knudsen, Raul Primicerio, Anders Klemetsen and Armand M. Kuris, Journal of Animal Ecology 2009, 78, 563–572