Diet Overlap

Branta canadensis (Canada Goose)
Anas acuta (Northern Pintail)

Common Diet

Lemna minor (common duckweed)

Common Habitat

Acadia National Park
Agate Fossil Beds National Monument
Alaska Maritime National Wildlife Refuge
Alaska Peninsula montane taiga
Alaska-St. Elias Range tundra
Alberta Mountain forests
Alberta-British Columbia foothills forests
Aleutian Islands Biosphere Reserve
Aleutian Islands tundra
Alfsee
Algonquin Provincial Park
Alto Golfo de California y Delta del Rio Colorado
Amistad National Recreation Area
Anza-Borrego Desert State Park, CA
Apostle Islands National Lakeshore
Appalachian mixed mesophytic forests
Araslövssjöområdet
Arches National Park
Arctic coastal tundra
Arctic foothills tundra
Arctic National Wildlife Refuge
Arizona Mountains forests
Arkansas Post National Memorial
Assateague Island National Seashore
Atlantic coastal pine barrens
Atlantic mixed forests
Audubon National Wildlife Refuge
Badlands National Park
Baja California desert
Baltic mixed forests
Banff National Park
Beringia lowland tundra
Beringia upland tundra
Bermuda subtropical conifer forests
Big Bend Biosphere Reserve
Big Morongo Canyon Preserve
Bighorn Canyon National Recreation Area
Blackbeard Island National Wildlife Refuge
Blackwater National Wildlife Refuge
Blue Mountains forests
Boggs Lake Preserve
Bombay Hook National Wildlife Refuge
Bonanza Creek LTER Site
British Columbia mainland coastal forests
Brooks-British Range tundra
Bruce Peninsula National Park
Bryce Canyon National Park
Buffalo National River
Cabrillo National Monument
Caerlaverock National Nature Reserve
Caledon conifer forests
California Central Valley grasslands
California Coast Ranges Biosphere Reserve
California coastal sage and chaparral
California Floristic Province
California interior chaparral and woodlands
California montane chaparral and woodlands
Canadian Aspen forests and parklands
Canaveral National Seashore
Canyonlands National Park
Cape Cod National Seashore
Cape Hatteras National Seashore
Cape Lookout National Seashore
Cape Romain National Wildlife Refuge
Capital Reef National Park
Carlsbad Caverns National Park
Carolinian-South Atlantic Biosphere Reserve
Carrizo Plain Preserve
Cascade Mountains leeward forests
Caucasus
Cedar Creek LTER Site
Celtic broadleaf forests
Central and Southern Cascades forests
Central and Southern mixed grasslands
Central British Columbia Mountain forests
Central European mixed forests
Central forest-grasslands transition
Central Gulf Coastal Plain Biosphere Reserve
Central Pacific coastal forests
Central Plains Biosphere Reserve
Central tall grasslands
Central U.S. hardwood forests
Champlain-Adirondack Biosphere Reserve
Channel Islands National Marine Sanctuary
Channel Islands National Park
Chattahoochee River National Recreation Area
Chickasaw National Recreation Area
Chihuahuan desert
Coachella Valley Preserve
Colonial National Historic Park
Colorado Plateau shrublands
Colorado Rockies forests
Cook Inlet taiga
Copper Plateau taiga
Cosumnes River Preserve
Crater Lake National Park
Creighton Ranch Preserve
Crosswinds Marsh
Curecanti National Recreation Area
Cuyahoga Valley National Park
De Soto National Wildlife Refuge
Death Valley National Park
Dee Estuary/ Aber Dyfrdwy
Deer Flat National Wildlife Refuge
Denali Biosphere Reserve
Dinosaur National Monument
Dolina Dolnej Wisly
Dolna Odra
DOÑANA
Dos Palmas Preserve
Dungeness
Dye Creek Preserve
Dyfi National Nature Reserve
East Central Texas forests
Eastern Canadian forests
Eastern Canadian Shield taiga
Eastern Cascades forests
Eastern forest-boreal transition
Eastern Great Lakes lowland forests
Edwards Plateau savanna
Edwin S. George Reserve
Effigy Mounds National Monument
Elk Island National Park
Elkhorn Slough Preserve
Embalses del centro (San Andrés,la Granda, Trasona y la Furta)
Emsmarsch von Leer bis Emden
English Lowlands beech forests
Everglades
Farallon National Wildlife Refuge
Fathom Five National Marine Park
Flint Hills tall grasslands
Florida Keys National Marine Sanctuary
Florida sand pine scrub
Forillon National Park
Fort Pulaski National Monument
Fossil Butte National Monument
Fraser Plateau and Basin complex
Fundy National Park
Gates of the Arctic National Park
Gateway National Recreation Area
George WA Carver National Monument
George Washington Birthplace National Monument
Georgian Bay Islands National Park
Glacier Bay National Park and Preserve
Glacier National Park
Glen Canyon National Recreation Area
Golden Gate National Recreation Area
Grand Canyon National Park
Grasslands National Park
Gray Lodge State Wildlife Area
Great Basin montane forests
Great Basin National Park
Great Basin shrub steppe
Great Smoky Mountains National Park
Great Swamp National Wildlife Refuge
Greenwater Provincial Park
Gros Morne National Park
Gulf of St. Lawrence lowland forests
Gwaii Haanas National Park Reserve
Haapajärvi-Säärystenjärvi
Hammeniederung
Heinlahti
Hot Springs National Park
Hovenweep National Monument
Indiana Dunes National Lakeshore
Interior Alaska-Yukon lowland taiga
Interior Yukon-Alaska alpine tundra
Ivvavik National Park
Jasper National Park
Jepson Prairie Preserve
Kalisjön
Kaloko-Honokohau National Historical Park
Kern River Preserve
Kirkkojärvi
Kirkkonummen saaristo (SPA)
Klamath-Siskiyou forests
Kluane National Park and Reserve
Kootenay National Park
Kouchibouguac National Park
Kristiinankaupungin saaristo
Kuivasjärvi
Kulju
Kuusistonlahti
Lacassine National Wildlife Refuge
Lake Mead National Recreation Area
Lake Meredith National Recreation Area
Lake Roosevelt National Recreation Area
Lake Superior Provincial Park
Lampertheimer Altrhein
Land Between the Lakes Biosphere Reserve
Laplandskiy Biosphere Reserve
Lassen Volcanic National Park
Lava Beds National Monument
Little River National Wildlife Refuge
Little St. Simons Island
Long Point Biosphere Reserve
Low Arctic tundra
Madrean Pine-Oak Woodlands
Mammoth Cave Area Biosphere Reserve (Natn'l Park)
Merenkurkun saaristo
Mesa Verde National Park
Meseta Central matorral
Mid-Continental Canadian forests
Middle America
Middle Atlantic coastal forests
Midwestern Canadian Shield forests
Mingan Archipelago National Park Reserve
Minsmere to Walberswick Heaths and Marshes
Mississippi lowland forests
Mojave and Colorado Deserts Biosphere Reserve
Mojave desert
Mongolian-Manchurian grassland
Montana Valley and Foothill grasslands
Morristown National Historical Park
Mount Arrowsmith
Mount Rainier National Park
Muskwa-Slave Lake forests
Nahanni National Park Reserve
Närpiön saaristo
National Capital Parks - Central
National Capital Region - East
Nebraska Sand Hills mixed grasslands
Neusiedler See-Osterreichischer Teil
New England-Acadian forests
New River Gorge National River
Newfoundland Highland forests
Nez Perce National Historical Park
Niagara Escarpment Biosphere Reserve
Nieszawska Dolina Wisly
Noatak Biosphere Reserve
North America
North Central Rockies forests
North Norfolk Coast
North Norfolk Coast Biosphere Reserve
Northeast China Plain deciduous forests
Northeastern coastal forests
Northern Anatolian conifer and deciduous forests
Northern California coastal forests
Northern Canadian Shield taiga
Northern Cordillera forests
Northern mixed grasslands
Northern Pacific coastal forests
Northern short grasslands
Northern tall grasslands
Northern transitional alpine forests
Northwest Territories taiga
Oak Ridge National Environmental Research Park
Ocmulgee National Monument
Ogilvie-MacKenzie alpine tundra
Okanagan dry forests
Okefenokee National Wildlife Refuge
Okskiy Biosphere Reserve
Olympic Biosphere Reserve
Organ Pipe Cactus Biosphere Reserve
Ostrov Vrangelya (Wrangel Island) Zapovednik
Otajärvi
Ozark National Scenic Riverways
Pacific Coastal Mountain icefields and tundra
Pacific Rim National Park Reserve
Padre Island National Seashore
Paimionlahti
Paine Preserve
Palava Protected Landscape Area
Palouse grasslands
Petrified Forest National Park
Philip L. Boyd Deep Canyon Desert Research Center
Pictured Rocks National Lakeshore
Pieni-Kaihlanen
Piney Woods forests
Pipe Spring National Monument
Point Pelee National Park
Point Reyes National Seashore
Polar Bear Provincial Park
Pooskerin saaristo
Prince Albert National Park
Prince Edward Island National Park
Puget lowland forests
Pukaskwa National Park
Putkilahti - Ruskeaperä
Queen Charlotte Islands
Queen Maud Gulf Bird Sanctuary
Rajalahti-Perilahti
Redberry Lake Biosphere Reserve
Redwood National Park
Reserva de la Biosfera de Doñana
Riding Mountain Biosphere Reserve
Rocky Mountain Biosphere Reserve
Rondeau Provincial Park
Roosevelt Vanderbilt National Historic Site
Ruegen
Saguenay - St. Lawrence Marine Park
Saint Croix International Historic Site
Saint Lawrence Islands National Park
Salminlahti
Santa Cruz Island Preserve
Santa Monica Mountains National Recreation Area
Santee Coastal Reserve and Washo Reserve
Scandinavian and Russian taiga
Sequoia and Kings Canyon Biosphere Reserve
Severn Estuary/ Môr Hafren
Sevilleta LTER Site
Shortgrass Steppe LTER Site
Sierra Madre de Oaxaca pine-oak forests
Sierra Nevada forests
Sjölax
Sleeping Bear Dunes National Lakeshore
Snake-Columbia shrub steppe
Sonoran desert
South Atlantic Coastal Plain Biosphere Reserve
South Avalon-Burin oceanic barrens
South Central Rockies forests
South Florida rocklands
Southeastern conifer forests
Southeastern mixed forests
Southern Appalachian Biosphere Reserve
Southern Great Lakes forests
Southern Hudson Bay taiga
Spreewald
St. Kilda National Nature Reserve
Tåkern
Tamaulipan matorral
Tamaulipan mezquital
Tawas Point State Park
Tennessee River Gorge
Texas blackland prairies
Tuktut Nogait National Park
Ukkusiksalik National Park
Unterweser
Upper Midwest forest-savanna transition
Upper Miss. River Nat'l Wildlife Refuge
Uudenkaarlepyyn saaristo
Valley Forge National Historical Park
Vina Plains Preserve
Virginia Coast Biosphere Reserve
Voyageurs National Park
Vuntut National Park
Wapusk National Park
Wasatch and Uinta montane forests
Waterton Biosphere Reserve
Wesertalaue bei Landesbergen
Western European broadleaf forests
Western Great Lakes forests
Western Gulf Coastal grasslands
Western Michigan University’s Asylum Lake
Western short grasslands
Wheeler National Wildlife Refuge
Whiskey-Shasta-Trinity National Recreation Area
White Sands National Monument
Willamette Valley forests
Wind Cave National Park
Winisk River Provincial Park
Wood Buffalo National Park
Wrangell-St. Elias National Park and Preserve
Wyoming Basin shrub steppe
Yellowstone Biosphere Reserve
Ylimysjärvi
Yoho National Park
Yukon Interior dry forests
Zalew Wislany
Zion National Park

Attributes / relations provided by
♦ 1Study of Northern Virginia Ecology
♦ 2FEEDING ECOLOGY OF PINTAIL HENS DURING REPRODUCTION, GARY L. KRAPU, The Auk 91: 278-290. April 1974