Diet Overlap

Calidris pusilla (Semipalmated Sandpiper)
Larus argentatus (Herring Gull)

Common Diet

Abra marshalli (Baltic macoma)
Corophium volutator (mud shrimp)

Common Habitat

Acadia National Park
Aleutian Islands Biosphere Reserve
Algonquin Provincial Park
Alto Golfo de California y Delta del Rio Colorado
Amistad National Recreation Area
Apostle Islands National Lakeshore
Arctic National Wildlife Refuge
Arkansas Post National Memorial
Audubon National Wildlife Refuge
Baffin coastal tundra
Bahamian pine mosaic
Bahamoan-Antillean mangroves
Banff National Park
Beringia lowland tundra
Beringia upland tundra
Bermuda subtropical conifer forests
Biscayne National Park
Blackbeard Island National Wildlife Refuge
Blackwater National Wildlife Refuge
Bombay Hook National Wildlife Refuge
Bruce Peninsula National Park
Buenavista
California Coast Ranges Biosphere Reserve
Canaveral National Seashore
Cape Breton Highlands National Park
Cape Cod National Seashore
Cape Hatteras National Seashore
Cape Lookout National Seashore
Cape Romain National Wildlife Refuge
Caribbean Islands
Caribbean shrublands
Carolinian-South Atlantic Biosphere Reserve
Central American dry forests
Central Gulf Coastal Plain Biosphere Reserve
Chattahoochee River National Recreation Area
Chesapeake & Ohio Canal National Hist. Park
Colonial National Historic Park
Crosswinds Marsh
Cuban cactus scrub
Cuban dry forests
Cuban moist forests
Cuban pine forests
Cuban wetlands
Cumberland Island National Seashore
Curecanti National Recreation Area
Davis Highlands tundra
Denali Biosphere Reserve
Eastern Canadian forests
Eastern Canadian Shield taiga
Effigy Mounds National Monument
Elk Island National Park
Enriquillo wetlands
Farallon National Wildlife Refuge
Fathom Five National Marine Park
Felsenthal National Wildlife Refuge
Florida Keys National Marine Sanctuary
Forillon National Park
Fort Caroline National Memorial
Fort Matanzas National Monument
Fort Pulaski National Monument
Fundy National Park
Gates of the Arctic National Park
Gateway National Recreation Area
Georgian Bay Islands National Park
Glacier Bay National Park and Preserve
Grand Canyon National Park
Great Smoky Mountains National Park
Great Swamp National Wildlife Refuge
Gros Morne National Park
Gwaii Haanas National Park Reserve
Hispaniolan dry forests
Hispaniolan moist forests
Hispaniolan pine forests
Horicon National Wildlife Refuge
Hot Springs National Park
Indiana Dunes National Lakeshore
Ivvavik National Park
Jamaican dry forests
Jamaican moist forests
Jean Lafitte National Hist. Park & Preserve
Kejimkujik Seaside Adjunct
Kouchibouguac National Park
Lacassine National Wildlife Refuge
Lake Mead National Recreation Area
Lake Meredith National Recreation Area
Lake Superior Provincial Park
Land Between the Lakes Biosphere Reserve
Leeward Islands moist forests
Lesser Antillean dry forests
Little St. Simons Island
Long Point Biosphere Reserve
Low Arctic tundra
Mesoamerica
Mesoamerican Gulf-Caribbean mangroves
Middle Arctic tundra
Mingan Archipelago National Park Reserve
Minsmere to Walberswick Heaths and Marshes
Morrocoy National Park
Nahanni National Park Reserve
Niagara Escarpment Biosphere Reserve
Noatak Biosphere Reserve
North America
North Norfolk Coast
Northern Canadian Shield taiga
Okefenokee National Wildlife Refuge
Pacific Rim National Park Reserve
Padre Island National Seashore
Panamanian dry forests
Pictured Rocks National Lakeshore
Point Pelee National Park
Point Reyes National Seashore
Polar Bear Provincial Park
Prince Albert National Park
Prince Edward Island National Park
Puerto Rican dry forests
Puerto Rican moist forests
Pukaskwa National Park
Queen Maud Gulf Bird Sanctuary
Redberry Lake Biosphere Reserve
Redwood National Park
Riding Mountain Biosphere Reserve
Rondeau Provincial Park
Saguenay - St. Lawrence Marine Park
Saint Croix International Historic Site
Saint Lawrence Islands National Park
Salt Plains National Wildlife Refuge
Santa Monica Mountains National Recreation Area
Santee Coastal Reserve and Washo Reserve
Sevilleta LTER Site
Sierra Nevada de Santa Marta (incl. Tayrona NP)
Sleeping Bear Dunes National Lakeshore
South American Pacific mangroves
South Atlantic Coastal Plain Biosphere Reserve
Southern Appalachian Biosphere Reserve
Southern Hudson Bay taiga
Southern Mesoamerican Pacific mangroves
Tawas Point State Park
Terra Nova National Park
Torngat Mountain tundra
Tuktut Nogait National Park
Ukkusiksalik National Park
Upper Miss. River Nat'l Wildlife Refuge
Valley Forge National Historical Park
Virginia Coast Biosphere Reserve
Voyageurs National Park
Walker Bay Field Station
Wapusk National Park
Wheeler National Wildlife Refuge
Windward Islands moist forests
Winisk River Provincial Park
Wood Buffalo National Park
Wrangell-St. Elias National Park and Preserve
Yellowstone Biosphere Reserve
Yucatán dry forests
Yucatán moist forests

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.
♦ 2Energy flow of a boreal intertidal ecosystem, the Sylt-Rømø Bight, Dan Baird, Harald Asmus, Ragnhild Asmus, Mar Ecol Prog Ser 279: 45–61, 2004
♦ 3"Crawling behaviour of the amphipod Corophium volutator and foraging by Semipalmated Sandpipers, Calidris pusilla", J. Sherman Boates, Peter C. Smith, Canadian Journal of Zoology, 1989, 67(2): 457-462