Diet Overlap

Larus delawarensis (Ring-billed Gull)
Cardinalis cardinalis (Northern Cardinal)

Common Diet

Gryllus pennsylvanicus (fall field cricket)
Melanoplus differentialis (Differential Grasshopper)

Common Habitat

Acadia National Park
Algonquin Provincial Park
Allegheny Highlands forests
Amistad National Recreation Area
Appalachian mixed mesophytic forests
Arkansas Post National Memorial
Assateague Island National Seashore
Atlantic coastal pine barrens
Baja California desert
Bermuda subtropical conifer forests
Big Bend Biosphere Reserve
Big Cypress National Preserve
Big Thicket Biosphere Reserve
Biscayne National Park
Blackbeard Island National Wildlife Refuge
Blackwater National Wildlife Refuge
Bombay Hook National Wildlife Refuge
Bruce Peninsula National Park
Buffalo National River
Calvin College Ecosystem Preserve
Canaveral National Seashore
Cape Cod National Seashore
Cape Hatteras National Seashore
Cape Lookout National Seashore
Cape Romain National Wildlife Refuge
Carlsbad Caverns National Park
Carolinian-South Atlantic Biosphere Reserve
Catoctin Mountain Park
Cedar Creek LTER Site
Central forest-grasslands transition
Central Gulf Coastal Plain Biosphere Reserve
Central Mexican matorral
Central U.S. hardwood forests
Champlain-Adirondack Biosphere Reserve
Chesapeake & Ohio Canal National Hist. Park
Chickasaw National Recreation Area
Chihuahuan desert
Chippewa Nature Center
Colonial National Historic Park
Congaree Swamp National Park
Crosswinds Marsh
Cumberland Island National Seashore
Cuyahoga Valley National Park
De Soto National Wildlife Refuge
Eastern forest-boreal transition
Eastern Great Lakes lowland forests
Edwin S. George Reserve
Effigy Mounds National Monument
Everglades
Fathom Five National Marine Park
Felsenthal National Wildlife Refuge
Fire Island National Seashore
Florida Keys National Marine Sanctuary
Florida sand pine scrub
Fort Caroline National Memorial
Fort Matanzas National Monument
Fort Pulaski National Monument
Fundy National Park
Gateway National Recreation Area
George Washington Birthplace National Monument
George Washington Memorial Parkway
Georgian Bay Islands National Park
Gettysburg National Military Park
Great Smoky Mountains National Park
Great Swamp National Wildlife Refuge
Gros Morne National Park
Guadalupe Mountains National Park
Gulf of California xeric scrub
Hope College Biology Nature Preserve
Horicon National Wildlife Refuge
Horseshoe Bend National Military Park
Hot Springs National Park
Jean Lafitte National Hist. Park & Preserve
Kaloko-Honokohau National Historical Park
Kellogg Biological Station LTER Site
Konza Prairie Biosphere Reserve
Lacassine National Wildlife Refuge
Lake Mead National Recreation Area
Lake Meredith National Recreation Area
Lake Superior Provincial Park
Land Between the Lakes Biosphere Reserve
Little River National Wildlife Refuge
Little St. Simons Island
Long Point Biosphere Reserve
Madrean Pine-Oak Woodlands
Mammoth Cave Area Biosphere Reserve (Natn'l Park)
Manassas National Battlefield Park
Meseta Central matorral
Mesoamerica
Middle Atlantic coastal forests
Mississippi lowland forests
Morristown National Historical Park
National Capital Parks - Central
National Capital Region - East
New England-Acadian forests
New River Gorge National River
Niagara Escarpment Biosphere Reserve
North America
Northeastern coastal forests
Northern mixed grasslands
Northern short grasslands
Northern tall grasslands
Oak Ridge National Environmental Research Park
Oaxacan montane forests
Organ Pipe Cactus Biosphere Reserve
Ozark Mountain forests
Padre Island National Seashore
Pantanos de Centla
Petén-Veracruz moist forests
Pictured Rocks National Lakeshore
Piney Woods forests
Point Pelee National Park
Reserva de la Biosfera El Vizcaino
Rock Creek Park
Rondeau Provincial Park
Roosevelt Vanderbilt National Historic Site
Saint Croix International Historic Site
Saint Lawrence Islands National Park
Salt Plains National Wildlife Refuge
San Lucan xeric scrub
Santee Coastal Reserve and Washo Reserve
Saratoga National Historical Park
Sierra de la Laguna dry forests
Sierra de la Laguna pine-oak forests
Sierra de los Tuxtlas
Sierra Madre de Oaxaca pine-oak forests
Sierra Madre Oriental pine-oak forests
Sinaloan dry forests
Sleeping Bear Dunes National Lakeshore
Sonoran desert
Sonoran-Sinaloan transition subtropical dry forest
South Atlantic Coastal Plain Biosphere Reserve
South Florida rocklands
Southeastern conifer forests
Southeastern mixed forests
Southern Appalachian Biosphere Reserve
Southern Great Lakes forests
Southern Pacific dry forests
Tamaulipan matorral
Tamaulipan mezquital
Tawas Point State Park
Tennessee River Gorge
Thomas Stone National Historic Site
Trans-Mexican Volcanic Belt pine-oak forests
Upper Midwest forest-savanna transition
Upper Miss. River Nat'l Wildlife Refuge
Valley Forge National Historical Park
Veracruz dry forests
Veracruz moist forests
Veracruz montane forests
Vicksburg National Military Park
Virginia Coast Biosphere Reserve
Western Great Lakes forests
Western Gulf Coastal grasslands
Western Michigan University’s Asylum Lake
Western short grasslands
Wheeler National Wildlife Refuge
Yucatán dry forests
Yucatán moist forests

Attributes / relations provided by
1Study of Northern Virginia Ecology