Diet Overlap

Bubo virginianus (Great Horned Owl)
Asio flammeus (Short-eared Owl)

Common Diet

Blarina brevicauda (Northern Short-tailed Shrew)
Lemmiscus curtatus (sagebrush vole)
Microtus californicus (California vole)
Microtus montanus (montane vole)
Microtus pennsylvanicus (meadow vole)
Microtus pinetorum (woodland vole)
Reithrodon auritus (bunny rat)

Common Habitat

Acadia National Park
Agate Fossil Beds National Monument
Alaska Peninsula montane taiga
Alaska-St. Elias Range tundra
Alberta Mountain forests
Alberta-British Columbia foothills forests
Aleutian Islands tundra
Algonquin Provincial Park
Allegheny Highlands forests
Alta Paraná Atlantic forests
Anza-Borrego Desert State Park, CA
Appalachian mixed mesophytic forests
Appalachian-Blue Ridge forests
Apure-Villavicencio dry forests
Araucaria moist forests
Arches National Park
Arctic National Wildlife Refuge
Arizona Mountains forests
Arkansas Post National Memorial
Atlantic coastal pine barrens
Atlantic Forest
Audubon National Wildlife Refuge
Badlands National Park
Baja California desert
Bajío dry forests
Balsas dry forests
Bañados del Este
Bandelier National Monument
Banff National Park
Beni savanna
Beringia lowland tundra
Beringia upland tundra
Big Bend Biosphere Reserve
Big Cypress National Preserve
Bighorn Canyon National Recreation Area
Blackwater National Wildlife Refuge
Blue Mountains forests
Bolivian montane dry forests
Bolivian Yungas
Bombay Hook National Wildlife Refuge
Bonanza Creek LTER Site
Bosques Petrificados Monumental Natural
British Columbia mainland coastal forests
Bruce Peninsula National Park
Cabrillo National Monument
California Central Valley grasslands
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
Cape Cod National Seashore
Cape Hatteras National Seashore
Cape Romain National Wildlife Refuge
Capital Reef National Park
Caribbean Islands
Carlsbad Caverns National Park
Carolinian-South Atlantic Biosphere Reserve
Carrizo Plain Preserve
Cascade Mountains leeward forests
Cedar Creek LTER Site
Central and Southern Cascades forests
Central and Southern mixed grasslands
Central Andean puna
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
Cerrado
Cerrado
Champlain-Adirondack Biosphere Reserve
Channel Islands National Marine Sanctuary
Channel Islands National Park
Chattahoochee River National Recreation Area
Chesapeake & Ohio Canal National Hist. Park
Chickasaw National Recreation Area
Chihuahuan desert
Chilean matorral
Chilean Winter Rainfall-Valdivian Forests
Chiquitano dry forests
Cinaruco-Capanaparo National Park
Colorado Plateau shrublands
Colorado Rockies forests
Cook Inlet taiga
Copper Plateau taiga
Craters of the Moon National Monument
Creighton Ranch Preserve
Cumberland Island National Seashore
Curecanti National Recreation Area
Death Valley National Park
Deer Flat National Wildlife Refuge
Defensores del Chaco National Park
Denali Biosphere Reserve
Dinosaur National Monument
Dry Chaco
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
Effigy Mounds National Monument
Elk Island National Park
Elkhorn Slough Preserve
Espinal
Estación Biológica El Frío
Everglades
Fathom Five National Marine Park
Flint Hills tall grasslands
Florida sand pine scrub
Forillon National Park
Fort Pulaski 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 Memorial Parkway
Georgian Bay Islands National Park
Gettysburg National Military Park
Glacier Bay National Park and Preserve
Grasslands National Park
Gray Lodge State Wildlife Area
Great Basin montane forests
Great Basin National Park
Great Basin shrub steppe
Great Swamp National Wildlife Refuge
Greenwater Provincial Park
Gros Morne National Park
Guianan moist forests
Gulf of California xeric scrub
Gulf of St. Lawrence lowland forests
Horicon National Wildlife Refuge
Hot Springs National Park
Hovenweep National Monument
Humid Chaco
Humid Pampas
Indiana Dunes National Lakeshore
Interior Alaska-Yukon lowland taiga
Interior Yukon-Alaska alpine tundra
Jalisco dry forests
Jasper National Park
Kejimkujik Seaside Adjunct
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
Lacassine National Wildlife Refuge
Lake Mead National Recreation Area
Lake Superior Provincial Park
Lanín National Park
Lanphere-Christensen Dunes Preserve
Lassen Volcanic National Park
Lava Beds National Monument
Little St. Simons Island
Llanos
Long Point Biosphere Reserve
Los Glaciares National Park
Madrean Pine-Oak Woodlands
Mburucuyá National Park
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
Mount Tamalpais State Park
Muskwa-Slave Lake forests
Nahuel Huapi National Park
Nebraska Sand Hills mixed grasslands
New England-Acadian forests
New Jersey Pinelands Biosphere Reserve
Newfoundland Highland forests
Nez Perce National Historical Park
Niagara Escarpment Biosphere Reserve
Noatak Biosphere Reserve
North America
North Central Rockies forests
Northeastern coastal forests
Northern Andean páramo
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
Ogilvie-MacKenzie alpine tundra
Okanagan dry forests
Ozark Mountain forests
Ozark National Scenic Riverways
Pacific Coastal Mountain icefields and tundra
Pacific Rim National Park Reserve
Padre Island National Seashore
Paine Preserve
Palouse grasslands
Pantanal
Paraná flooded savanna
Perito Moreno National Park
Petrified Forest National Park
Philip L. Boyd Deep Canyon Desert Research Center
Piney Woods forests
Point Pelee National Park
Point Reyes National Seashore
Polar Bear Provincial Park
Prince Albert National Park
Prince Edward Island National Park
Puget lowland forests
Pukaskwa National Park
Queen Charlotte Islands
Redwood National Park
Reserva de la Biosfera de Pozuelos
Reserva de la Biosfera El Vizcaino
Reserva Ecologica de Ñacuñan
Reserva Natural Otamendi
Reserve de Biosphere Cerrado
Riding Mountain Biosphere Reserve
Rondeau Provincial Park
Saguaro National Park
Saint Croix International Historic Site
Saint Lawrence Islands National Park
Salt Plains National Wildlife Refuge
San Dimas Biosphere Reserve
San Lucan xeric scrub
Santa Monica Mountains National Recreation Area
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 Juarez and San Pedro Martir pine-oak forests
Sierra Madre de Oaxaca 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 Avalon-Burin oceanic barrens
South Central Rockies forests
South Florida rocklands
Southeastern conifer forests
Southeastern mixed forests
Southern Andean Yungas
Southern Cone Mesopotamian savanna
Southern Great Lakes forests
Southern Hudson Bay taiga
Southwest Amazon moist forests
Sunset Crater Volcano National Monument
Tamaulipan matorral
Tamaulipan mezquital
Tawas Point State Park
Texas blackland prairies
Tierra Del Fuego National Park
Tinfunqué National Park
Trans-Mexican Volcanic Belt pine-oak forests
Tropical Andes
Tumbes-Choco-Magdalena
Upper Midwest forest-savanna transition
Upper Miss. River Nat'l Wildlife Refuge
Uruguayan savanna
Veracruz moist forests
Veracruz montane forests
Virginia Coast Biosphere Reserve
Voyageurs National Park
Wapusk National Park
Wasatch and Uinta montane forests
Waterton Biosphere Reserve
Western Great Lakes forests
Western Gulf Coastal grasslands
Western short grasslands
Willamette Valley forests
Wood Buffalo National Park
Wrangell-St. Elias National Park and Preserve
Wupatki National Monument
Wyoming Basin shrub steppe
Yellowstone Biosphere Reserve
Yoho National Park
Yukon Interior dry forests

Attributes / relations provided by
♦ 1Blarina brevicauda, Sarah B. George, Jerry R. Choate, and Hugh H. Genoways, MAMMALIAN SPECIES No. 261, pp. 1-9 (1986)
♦ 2Lemmiscus curtatus, Lynn E. Carroll and Hugh H. Genoways, Mammalian Species No. 124, pp. 1-6 (1980)
♦ 3Microtus californicus (Rodentia: Cricetidae), NICHOLE L. CUDWORTH AND JOHN L. KOPROWSKI, MAMMALIAN SPECIES 42(868):230–243 (2010)
♦ 4Raptor Predation on Wintering Shorebirds, G. Page and D. F. Whitacre, The Condor, Vol. 77, No. 1 (Spring, 1975), pp. 73-83
♦ 5Microtus montanus, Wendy E. Sera and Cathleen N. Early, MAMMALIAN SPECIES No. 716, pp. 1–10 (2003)
♦ 6DIET OF THE GREAT HORNED OWL IN THE CRESTON VALLEY, BRITISH COLUMBIA, 1998 - 2005, Linda M. Van Damme, Wildlife Afield 2:2 December 2005, pp. 73-78
♦ 7BREEDING SEASON DIET OF SHORT-EARED OWLS IN MASSACHUSETTS, DENVER W. HOLT, Wilson Bull., 105(3), 1993, pp. 490-496
♦ 8Microtus pinetorum, Michael J. Smolen, Mammalian Species No. 147, pp. 1-7 (1981)
♦ 9Reithrodon auritus, Ulyses F. J. Pardin ̃as and Carlos A. Galliari, MAMMALIAN SPECIES No. 664, pp. 1–8 (2001)