Diet Overlap

Clangula hyemalis (Oldsquaw)
Calidris canutus (Red Knot)

Common Diet

Mytilus edulis (Blue mussel)

Common Habitat

Acadia National Park
Aleutian Islands Biosphere Reserve
Algonquin Provincial Park
Apostle Islands National Lakeshore
Arctic foothills tundra
Arctic National Wildlife Refuge
Assateague Island National Seashore
Atlantic mixed forests
Baltic mixed forests
Bering tundra
Bideford Bay Biosphere Reserve
Blackbeard Island National Wildlife Refuge
Blackwater National Wildlife Refuge
Bombay Hook National Wildlife Refuge
Bruce Peninsula National Park
Cabrillo National Monument
Caerlaverock National Nature Reserve
California Coast Ranges Biosphere Reserve
Camargue
Canaveral National Seashore
Cape Cod National Seashore
Cape Hatteras National Seashore
Cape Lookout National Seashore
Carmarthen Bay and Estuaries/ Bae Caerfyrddin ac Aberoedd
Carolinian-South Atlantic Biosphere Reserve
Celtic broadleaf forests
Central Gulf Coastal Plain Biosphere Reserve
Changjiang Plain evergreen forests
Chukchi Peninsula tundra
Dee Estuary/ Aber Dyfrdwy
DELTA EVROU
DELTA NESTOU KAI LIMNOTHALASSES KERAMOTIS KAI NISOS THASOPOULA
Dolina Dolnej Wisly
DOÑANA
Drumcliff Bay SPA
Elkhorn Slough Preserve
English Lowlands beech forests
Farallon National Wildlife Refuge
Fathom Five National Marine Park
Florida Keys National Marine Sanctuary
Foret Domaniale du Circeo
Forillon National Park
Fort Pulaski National Monument
Gateway National Recreation Area
Glacier Bay National Park and Preserve
Golden Gate National Recreation Area
Gros Morne National Park
High Arctic tundra
Hortobágy National Park
Huang He Plain mixed forests
Isle of Rum National Nature Reserve
Isomatala-Maasyvänlahti
Ivvavik National Park
Japan
Jian Nan subtropical evergreen forests
Kiskunsag Biosphere Reserve
Kouchibouguac National Park
Kronotskiy Biosphere Reserve
Kura kurgu
Lago di Mezzola e Pian di Spagna
Lake Mead National Recreation Area
Lake Superior Provincial Park
LIMNES KAI LIMNOTHALASSES TIS THRAKIS - EVRYTERI PERIOCHI KAI PARAKTIA ZONI
LIMNES VISTONIS, ISMARIS - LIMNOTHALASSES PORTO LAGOS, ALYKI PTELEA, XIROLIMNI, KARATZA
Loch a`Phuill
Long Point Biosphere Reserve
Low Arctic tundra
Manchurian mixed forests
Mandra - Poda
MARISMAS DEL RIO PIEDRAS Y FLECHA DEL ROMPIDO
Middle Arctic tundra
Mietoistenlahti
Mingan Archipelago National Park Reserve
Minsmere to Walberswick Heaths and Marshes
Moray Firth
Mount Arrowsmith
Neusiedler See-Osterreichischer Teil
Niagara Escarpment Biosphere Reserve
Nieszawska Dolina Wisly
Nihonkai montane deciduous forests
North America
North Bull Island
North Norfolk Coast
North Norfolk Coast Biosphere Reserve
North Northumberland Dunes
North-east Greenland National Park
Northeast China Plain deciduous forests
Novosibirsk Islands arctic desert
NSG Urmitzer Werth
Olympic Biosphere Reserve
Ostrov Vrangelya (Wrangel Island) Zapovednik
Pacific Rim National Park Reserve
Padre Island National Seashore
Palava Protected Landscape Area
Petolahdenjokisuisto
Po Basin mixed forests
Point Pelee National Park
Point Reyes National Seashore
Prince Edward Island National Park
Pukaskwa National Park
Queen Maud Gulf Bird Sanctuary
Quttinirpaaq (Ellesmere Island) National Park Reserve
Redwood National Park
Reserve Nationale de Camargue Biosphere Reserve
Rondeau Provincial Park
Saaristomeri
Saguenay - St. Lawrence Marine Park
Saint Lawrence Islands National Park
Santa Monica Mountains National Recreation Area
Scandinavian coastal conifer forests
Scandinavian Montane Birch forest and grasslands
Sefton Coast
Shabla Lake Complex
Sikhote-Alinskiy Biosphere Reserve
Sirmilik National Park
South Atlantic Coastal Plain Biosphere Reserve
Spreewald
Taimyr-Central Siberian tundra
Taimyrsky Biosphere Reserve
Tawas Point State Park
Tulliniemen linnustonsuojelualue
Ujscie Wisly
Ukkusiksalik National Park
Unteres Odertal
Urdaibaiko Itsasadarra / Ría de Urdaibai
Väinamere
Virginia Coast Biosphere Reserve
Walker Bay Field Station
Wrangel Island arctic desert
Yellowstone Biosphere Reserve

Attributes / relations provided by
♦ 1Winter 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
♦ 2Food 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