Diet Overlap

Buteo jamaicensis (Red-tailed Hawk)
Circus cyaneus (Northern Harrier)

Common Diet

Ixobrychus exilis (Least Bittern)
Microtus californicus (California vole)
Scapanus latimanus (Broad-footed Mole)
Sturnus vulgaris (European Starling)
Urocitellus brunneus (Idaho ground squirrel)
Urocitellus richardsonii (Richardson's ground squirrel)

Common Habitat

Acadia National Park
Agate Fossil Beds National Monument
Alaska-St. Elias Range tundra
Alberta Mountain forests
Alberta-British Columbia foothills forests
Aleutian Islands tundra
Algonquin Provincial Park
Allegheny Highlands forests
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
Appalachian-Blue Ridge forests
Arches National Park
Arizona Mountains forests
Arkansas Post National Memorial
Atlantic coastal pine barrens
Audubon National Wildlife Refuge
Badlands National Park
Bahamian pine mosaic
Bahamoan-Antillean mangroves
Baja California desert
Bajío dry forests
Balsas dry forests
Bandelier National Monument
Banff National Park
Beaver Creek Biosphere Reserve
Big Bend Biosphere Reserve
Big Cypress National Preserve
Big Morongo Canyon Preserve
Big Thicket Biosphere Reserve
Bighorn Canyon National Recreation Area
Biscayne National Park
Black Canyon of the Gunnison National Park
Blackbeard Island National Wildlife Refuge
Blackwater National Wildlife Refuge
Blue Mountains forests
Boggs Lake Preserve
British Columbia mainland coastal forests
Bruce Peninsula National Park
Bryce Canyon National Park
Buffalo National River
Cabrillo National Monument
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
Calvin College Ecosystem Preserve
Canadian Aspen forests and parklands
Canaveral National Seashore
Canyonlands National Park
Cape Breton Highlands National Park
Cape Cod National Seashore
Cape Hatteras National Seashore
Cape Lookout National Seashore
Cape Romain National Wildlife Refuge
Capital Reef National Park
Capulin Volcano National Monument
Caribbean Islands
Caribbean shrublands
Carlsbad Caverns National Park
Carolinian-South Atlantic Biosphere Reserve
Carrizo Plain Preserve
Casa Grande National Monument
Cascade Mountains leeward forests
Catoctin Mountain Park
Cedar Breaks National Monument
Cedar Creek LTER Site
Central American montane forests
Central American pine-oak forests
Central and Southern Cascades forests
Central and Southern mixed grasslands
Central British Columbia Mountain forests
Central Canadian Shield forests
Central forest-grasslands transition
Central Gulf Coastal Plain Biosphere Reserve
Central Mexican matorral
Central Pacific coastal forests
Central Plains Biosphere Reserve
Central tall grasslands
Central U.S. hardwood forests
Cerro Cacahuatique Wildlife Refuge
Chaco Culture National Historical Park
Champlain-Adirondack Biosphere Reserve
Channel Islands National Marine Sanctuary
Channel Islands National Park
Chattahoochee River National Recreation Area
Chesapeake & Ohio Canal National Hist. Park
Chiapas Depression dry forests
Chiapas montane forests
Chickasaw National Recreation Area
Chihuahuan desert
Chimalapas montane forests
Chippewa Nature Center
Chiricahua National Monument
Ciénaga de Zapata National Park
Coachella Valley Preserve
Colonial National Historic Park
Colorado National Monument
Colorado Plateau shrublands
Colorado Rockies forests
Congaree Swamp National Park
Cook Inlet taiga
Copper Plateau taiga
Cordillera Volcanica Central
Coronado National Monument
Cosumnes River Preserve
Coweeta Hydrologic Laboratory LTER Site
Crater Lake National Park
Craters of the Moon National Monument
Creighton Ranch Preserve
Crosswinds Marsh
Cuban cactus scrub
Cuban dry forests
Cuban moist forests
Cuban pine forests
Cuban wetlands
Cumberland Island National Seashore
Curecanti National Recreation Area
Cuyahoga Valley National Park
De Soto National Wildlife Refuge
Death Valley National Park
Deer Flat National Wildlife Refuge
Denali Biosphere Reserve
Desecheo National Wildlife Refuge
Devils Tower National Monument
Dinosaur National Monument
Dos Palmas Preserve
Dye Creek Preserve
East Central Texas forests
Eastern Canadian forests
Eastern Cascades forests
Eastern forest-boreal transition
Eastern Great Lakes lowland forests
Edwards Plateau savanna
Edwin S. George Reserve
Effigy Mounds National Monument
El Malpais National Monument
El Morro National Monument
Elk Island National Park
Elkhorn Slough Preserve
Enriquillo wetlands
Everglades
Fairfield Osborn Preserve
Farallon National Wildlife Refuge
Fathom Five National Marine Park
Felsenthal National Wildlife Refuge
Fire Island National Seashore
Flint Hills tall grasslands
Florida Keys National Marine Sanctuary
Florida sand pine scrub
Forillon National Park
Fort Bowie National Historic Site
Fort Caroline National Memorial
Fort Davis National Historic Site
Fort Matanzas National Monument
Fort Pulaski National Monument
Fort Union National Monument
Fossil Butte National Monument
Fraser Biosphere Reserve
Fraser Plateau and Basin complex
Friendship Hill National Historic Site
Fundy National Park
Gates of the Arctic National Park
Gateway National Recreation Area
George WA Carver National Monument
George Washington Birthplace National Monument
George Washington Memorial Parkway
Georgian Bay Islands National Park
Gettysburg National Military Park
Glacier Bay National Park and Preserve
Glacier National Park
Glen Canyon National Recreation Area
Golden Gate National Recreation Area
Grand Canyon National Park
Grand Teton 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
Guadalupe Mountains National Park
Gulf of California xeric scrub
Gulf of St. Lawrence lowland forests
Harpers Ferry National Historical Park
Hispaniolan dry forests
Hispaniolan moist forests
Hispaniolan pine forests
Homestead National Monument of America
Horicon National Wildlife Refuge
Horseshoe Bend National Military Park
Hot Springs National Park
Hovenweep National Monument
Indiana Dunes National Lakeshore
Interior Alaska-Yukon lowland taiga
Interior Yukon-Alaska alpine tundra
Isle Royale Biosphere Reserve
Ivvavik National Park
Jalisco dry forests
Jamaican dry forests
Jamaican moist forests
Jasper National Park
Jean Lafitte National Hist. Park & Preserve
Jepson Prairie Preserve
Jornada Biosphere Reserve
Joshua Tree National Park
Kaweah Oaks Preserve
Kejimkujik National Park
Kellogg Biological Station LTER Site
Kern River Preserve
Klamath-Siskiyou forests
Kluane National Park and Reserve
Knife River Indian Villages National Hist. Site
Konza Prairie Biosphere Reserve
Kootenay National Park
Kouchibouguac National Park
La Mauricie National Park
La Selva Biological Station
Lacassine National Wildlife Refuge
Lake Chelan National Recreation Area
Lake Mead National Recreation Area
Lake Meredith National Recreation Area
Lake Roosevelt National Recreation Area
Lake Superior Provincial Park
Land Between the Lakes Biosphere Reserve
Lanphere-Christensen Dunes Preserve
Lassen Volcanic National Park
Lava Beds National Monument
Leeward Islands moist forests
Lesser Antillean dry forests
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
McGinty Mountain Preserve
Mesa Verde National Park
Meseta Central matorral
Mesoamerica
Mid-Continental Canadian forests
Middle Atlantic coastal forests
Midwestern Canadian Shield forests
Mingan Archipelago National Park Reserve
Mississippi lowland forests
Mojave and Colorado Deserts Biosphere Reserve
Mojave desert
Montana Valley and Foothill grasslands
Morristown National Historical Park
Motagua Valley thornscrub
Mount Arrowsmith
Mount Rainier National Park
Mount Revelstoke National Park
Mount Tamalpais State Park
Muskwa-Slave Lake forests
Nahanni National Park Reserve
Natural Bridges National Monument
Nebraska Sand Hills mixed grasslands
New England-Acadian forests
New Jersey Pinelands Biosphere Reserve
Niagara Escarpment Biosphere Reserve
Nipomo Dunes Preserve
Noatak Biosphere Reserve
North America
North Central Rockies forests
Northeastern coastal 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
Oaxacan montane forests
Ocmulgee National Monument
Ogilvie-MacKenzie alpine tundra
Okanagan dry forests
Okefenokee National Wildlife Refuge
Olympic Biosphere Reserve
Organ Pipe Cactus Biosphere Reserve
Ozark Mountain forests
Ozark National Scenic Riverways
Pacific Coastal Mountain icefields and tundra
Pacific Rim National Park Reserve
Padre Island National Seashore
Paine Preserve
Palo Verde National Park
Palouse grasslands
Pantanos de Centla
Pecos National Historical Park
Petén-Veracruz moist forests
Petrified Forest National Park
Philip L. Boyd Deep Canyon Desert Research Center
Pictured Rocks National Lakeshore
Piney Woods forests
Pinnacles National Monument
Pipe Spring National Monument
Pipestone National Monument
Point Pelee National Park
Point Reyes National Seashore
Prince Albert National Park
Prince Edward Island National Park
Puerto Rican dry forests
Puerto Rican moist forests
Puget lowland forests
Pukaskwa National Park
Queen Charlotte Islands
Redberry Lake Biosphere Reserve
Redwood National Park
Reserva de la Biosfera El Vizcaino
Reserva de la Biosfera Sierra Gorda
Reserva de la Michilia
Reserva de Mapimi
Reserve de la Biosphere de Charlevoix
Richmond National Battlefield Park
Riding Mountain Biosphere Reserve
Rocky Mountain Biosphere Reserve
Rondeau Provincial Park
Saguaro National Park
Saint Croix International Historic Site
Saint Lawrence Islands National Park
Saint-Gaudens National Historic Site
Salinas Pueblo Missions National Monument
San Dimas Biosphere Reserve
San Joaquin Biosphere Reserve
San Juan Island National Historical Park
San Lucan xeric scrub
Santa Cruz Island Preserve
Santa Monica Mountains National Recreation Area
Santee Coastal Reserve and Washo Reserve
Saratoga National Historical Park
Scotts Bluff National Monument
Sequoia and Kings Canyon Biosphere Reserve
Sevilleta LTER Site
Shortgrass Steppe LTER Site
Sierra de la Laguna dry forests
Sierra de la Laguna pine-oak forests
Sierra de los Tuxtlas
Sierra Juarez and San Pedro Martir pine-oak forests
Sierra Madre de Chiapas moist forest
Sierra Madre de Oaxaca pine-oak forests
Sierra Madre del Sur pine-oak forests
Sierra Madre Occidental pine-oak forests
Sierra Madre Oriental pine-oak forests
Sierra Nevada forests
Sinaloan dry forests
Sleeping Bear Dunes National Lakeshore
Snake-Columbia shrub steppe
Sonoran desert
Sonoran-Sinaloan transition subtropical dry forest
South Atlantic Coastal Plain Biosphere Reserve
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
Southern Pacific dry forests
Southwest Nova Biosphere Reserve
Sunset Crater Volcano National Monument
Table Mountain
Tamaulipan matorral
Tamaulipan mezquital
Tawas Point State Park
Tehuacán Valley matorral
Tennessee River Gorge
Texas blackland prairies
Tomales Bay State Park
Tonto National Monument
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
Vina Plains Preserve
Virgin Islands Biosphere Reserve
Virginia Coast Biosphere Reserve
Voyageurs National Park
Wasatch and Uinta montane forests
Waterton Biosphere Reserve
Western Great Lakes forests
Western Gulf Coastal grasslands
Western Michigan University’s Asylum Lake
Western short grasslands
Wheeler National Wildlife Refuge
White Sands National Monument
Willamette Valley forests
Wilson's Creek National Battlefield
Wood Buffalo National Park
Wrangell-St. Elias National Park and Preserve
Wupatki National Monument
Wyoming Basin shrub steppe
Yellowstone Biosphere Reserve
Yoho National Park
Yosemite National Park
Yucatán dry forests
Yucatán moist forests
Yukon Interior dry forests
Zion National Park

Attributes / relations provided by
♦ 1The Breeding Ecology of Least Bitterns (Ixobrychus exilis) at Agassiz and Mingo National Wildlife Refuges, Karen Elizabeth Arnold, Thesis for Master of Science Major in Wildlife and Fisheries South Dakota State University 2005
♦ 2Microtus californicus (Rodentia: Cricetidae), NICHOLE L. CUDWORTH AND JOHN L. KOPROWSKI, MAMMALIAN SPECIES 42(868):230–243 (2010)
♦ 3Scapanus latimanus, B. J. Verts and Leslie N. Carraway, MAMMALIAN SPECIES No. 666, pp. 1–7 (2001)
♦ 4Study of Northern Virginia Ecology
♦ 5Ecology of Commanster
♦ 6Spermophilus brunneus, Eric Yensen and Paul W. Sherman, MAMMALIAN SPECIES No. 560, pp. 1-5 (1997)
♦ 7FOOD HABITS AND NEST CHARACTERISTICS OF BREEDING RAPTORS IN SOUTHWESTERN WYOMING, Patricia A. MacLaren, Stanley H. Anderson, and Douglas E. Runde, Great Basin Naturalist Vol. 48, No. 4 pp. 548-553 (1988)
♦ 8Spermophilus richardsonii, Gail R. Michener and James W. Koeppl, Mammalian Species No. 243, pp. 1-8, (1985)