Diet Overlap

Podiceps auritus (Horned Grebe)
Clangula hyemalis (Oldsquaw)

Common Diet

Ammodytes hexapterus (Stout sand lance)

Common Habitat

Acadia National Park
Alaska-St. Elias Range tundra
Aleutian Islands Biosphere Reserve
Algonquin Provincial Park
AMVRAKIKOS KOLPOS, DELTA LOUROU KAI ARACHTHOU (PETRA, MYTIKAS, EVRYTERI PERIOCHI)
Apostle Islands National Lakeshore
Arctic National Wildlife Refuge
Atlantic mixed forests
Baie de Vilaine
Baltic mixed forests
Baltijos juros priekrante
Banff National Park
Barguzinskiy Biosphere Reserve
Bering tundra
Beringia lowland tundra
Beringia upland tundra
Blackbeard Island National Wildlife Refuge
Blackwater National Wildlife Refuge
Bohai Sea saline meadow
Bombay Hook National Wildlife Refuge
Bruce Peninsula National Park
Cabrillo National Monument
California Coast Ranges Biosphere Reserve
Camargue
Canaveral National Seashore
Cape Breton Highlands National Park
Cape Cod National Seashore
Cape Lookout 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
Changjiang Plain evergreen forests
Chattahoochee River National Recreation Area
Chesapeake & Ohio Canal National Hist. Park
Chesil and the Fleet
Colonial National Historic Park
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
English Lowlands beech forests
Farallon National Wildlife Refuge
Fathom Five National Marine Park
Florida Keys National Marine Sanctuary
Foce dell'Isonzo - Isola della Cona
Foret Domaniale du Circeo
Fort Pulaski National Monument
Fundy National Park
Gateway National Recreation Area
George Washington Birthplace National Monument
Georgian Bay Islands National Park
Glacier Bay National Park and Preserve
Glen Canyon National Recreation Area
Golden Gate National Recreation Area
Gwaii Haanas National Park Reserve
Haapajärvi-Säärystenjärvi
Hokkaido deciduous forests
Hokkaido montane conifer forests
Huang He Plain mixed forests
Iceland boreal birch forests and alpine tundra
Interior Alaska-Yukon lowland taiga
Isle of Rum National Nature Reserve
Isle Royale Biosphere Reserve
Isomatala-Maasyvänlahti
Ivvavik National Park
Japan
Jasper National Park
Jian Nan subtropical evergreen forests
Kahtla-Kübassaare
Kaislanen
Kejimkujik Seaside Adjunct
Khazar Zapovednik
Kirkkonummen saaristo (SPA)
Kivijärvi
Kluane National Park and Reserve
Kouchibouguac National Park
Kronotskiy Biosphere Reserve
Kuivasjärvi
Kura kurgu
Lago di Mezzola e Pian di Spagna
Lake Meredith National Recreation Area
Lake Superior Provincial Park
Lake Torne Area
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
Moray Firth
Mount Arrowsmith
Nahanni National Park Reserve
Neusiedler See-Osterreichischer Teil
Niagara Escarpment Biosphere Reserve
Nihonkai montane deciduous forests
North America
North Atlantic moist mixed forests
North Bull Island
North Norfolk Coast
North Norfolk Coast Biosphere Reserve
Northeast China Plain deciduous forests
Northern Canadian Shield taiga
Northern transitional alpine forests
Oceania
Olympic Biosphere Reserve
Pacific Coastal Mountain icefields and tundra
Pacific Rim National Park Reserve
Padre Island National Seashore
Palava Protected Landscape Area
Paljassaare
Pechoro-Ilychskiy Biosphere Reserve
Petolahdenjokisuisto
Pictured Rocks National Lakeshore
Pieni- ja Suuri-Rautjärvi
Po Basin mixed forests
Point Pelee National Park
Point Reyes National Seashore
Polar Bear Provincial Park
Pomorie Lake
Prince Edward Island National Park
Pukaskwa National Park
Redwood National Park
Reserve Nationale de Camargue Biosphere Reserve
Rocky Mountain Biosphere Reserve
Rondeau Provincial Park
Saaristomeri
Saint Lawrence Islands National Park
Salminlahti
San Juan Island National Historical Park
Santa Monica Mountains National Recreation Area
Sarmatic mixed forests
Scandinavian and Russian taiga
Scandinavian coastal conifer forests
Scandinavian Montane Birch forest and grasslands
Sefton Coast
Sevilleta LTER Site
Shabla Lake Complex
Siiksaare-Oessaare
Sikhote-Alinskiy Biosphere Reserve
Sleeping Bear Dunes National Lakeshore
South Atlantic Coastal Plain Biosphere Reserve
Southern Hudson Bay taiga
Southern Korea evergreen forests
SPA Pommersche Bucht
Svensksundsviken
Tavvavuoma
Tawas Point State Park
The New Forest
Tuusulanjärven lintuvesi
Ujscie Wisly
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
Wapusk National Park
Waterton Biosphere Reserve
Wolin i Uznam
Wrangell-St. Elias National Park and Preserve
Yellowstone Biosphere Reserve
Zatoka Pomorska
Zatoka Pucka

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