Diet Overlap

Asio otus (Long-eared Owl)
Aegolius acadicus (Northern Saw-whet Owl)

Common Diet

Blarina brevicauda (Northern Short-tailed Shrew)
Microtus canicaudus (gray-tailed vole)
Microtus montanus (montane vole)
Microtus ochrogaster (prairie vole)
Peromyscus leucopus (white-footed mouse)
Sorex cinereus (masked shrew)

Common Habitat

Acadia National Park
Alberta Mountain forests
Alberta-British Columbia foothills forests
Allegheny Highlands forests
Apostle Islands National Lakeshore
Appalachian mixed mesophytic forests
Appalachian-Blue Ridge forests
Arizona Mountains forests
Atlantic coastal pine barrens
Bandelier National Monument
Big Bend Biosphere Reserve
Bighorn Canyon National Recreation Area
Black Canyon of the Gunnison National Park
Blackwater National Wildlife Refuge
Blue Mountains forests
Bombay Hook National Wildlife Refuge
British Columbia mainland coastal forests
Bruce Peninsula National Park
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
Cape Breton Highlands National Park
Cape Cod National Seashore
Cape Romain National Wildlife Refuge
Capulin Volcano National Monument
Carolinian-South Atlantic Biosphere Reserve
Cascade Mountains leeward forests
Cedar Creek LTER Site
Central and Southern Cascades forests
Central and Southern mixed grasslands
Central Canadian Shield forests
Central forest-grasslands transition
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
Chesapeake & Ohio Canal National Hist. Park
Chihuahuan desert
Colorado National Monument
Colorado Plateau shrublands
Colorado Rockies forests
Crater Lake National Park
Craters of the Moon National Monument
Crosswinds Marsh
Cuyahoga Valley National Park
Death Valley National Park
Deer Flat National Wildlife Refuge
East Central Texas 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
Elk Island National Park
Farallon National Wildlife Refuge
Fathom Five National Marine Park
Flint Hills tall grasslands
Fort Pulaski National Monument
Fraser Plateau and Basin complex
Fundy National Park
Gateway National Recreation Area
George Washington Memorial Parkway
Georgian Bay Islands National Park
Grand Canyon National Park
Grandfather Mountain
Great Basin montane forests
Great Basin National Park
Great Basin shrub steppe
Greenwater Provincial Park
Guadalupe Mountains National Park
Gulf of St. Lawrence lowland forests
Gwaii Haanas National Park Reserve
Jasper National Park
Joshua Tree National Park
Klamath-Siskiyou forests
Lake Superior Provincial Park
Lassen Volcanic National Park
Lava Beds National Monument
Long Point Biosphere Reserve
Madrean Pine-Oak Woodlands
Mesa Verde National Park
Middle Atlantic coastal forests
Midwestern Canadian Shield forests
Mississippi lowland forests
Mojave and Colorado Deserts Biosphere Reserve
Mojave desert
Montana Valley and Foothill grasslands
Morristown National Historical Park
Mount Rainier National Park
Mount Revelstoke National Park
Mount Tamalpais State Park
Navajo National Monument
Nebraska Sand Hills mixed grasslands
New England-Acadian forests
Nez Perce National Historical Park
Niagara Escarpment Biosphere Reserve
North America
North Central Rockies forests
Northeastern coastal forests
Northern California coastal forests
Northern mixed grasslands
Northern short grasslands
Northern tall grasslands
Okanagan dry forests
Oregon Caves National Monument
Ozark Mountain forests
Ozark National Scenic Riverways
Palouse grasslands
Pinnacles National Monument
Point Pelee National Park
Point Reyes National Seashore
Prince Albert National Park
Puget lowland forests
Pukaskwa National Park
Redwood National 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
San Dimas Biosphere Reserve
Sequoia and Kings Canyon Biosphere Reserve
Sevilleta LTER Site
Shortgrass Steppe LTER Site
Sierra Madre de Oaxaca pine-oak forests
Sierra Madre Occidental pine-oak forests
Sierra Madre Oriental pine-oak forests
Sierra Nevada forests
Sleeping Bear Dunes National Lakeshore
Snake-Columbia shrub steppe
South Atlantic Coastal Plain Biosphere Reserve
South Central Rockies forests
Southeastern mixed forests
Southern Appalachian Biosphere Reserve
Southern Great Lakes forests
Sunset Crater Volcano National Monument
Tawas Point State Park
Texas blackland prairies
Trans-Mexican Volcanic Belt pine-oak forests
Upper Midwest forest-savanna transition
Upper Miss. River Nat'l Wildlife Refuge
Virginia Coast Biosphere Reserve
Voyageurs National Park
Wasatch and Uinta montane forests
Waterton Biosphere Reserve
Western Great Lakes forests
Western short grasslands
Willamette Valley forests
Wupatki National Monument
Wyoming Basin shrub steppe
Yellowstone Biosphere Reserve
Yosemite National Park

Attributes / relations provided by
♦ 1Blarina brevicauda, Sarah B. George, Jerry R. Choate, and Hugh H. Genoways, MAMMALIAN SPECIES No. 261, pp. 1-9 (1986)
♦ 2DIET OF NORTHERN SAW-WHET OWLS IN SOUTHERN WISCONSIN, SCOTT R. SWENGEL AND ANN B. SWENGEL, The Condor 94:707-711 (1992)
♦ 3Microtus canicaudus, B. J. Verts and Leslie N. Carraway, MAMMALIAN SPECIES No. 267, pp. 1-4 (1987)
♦ 4Microtus montanus, Wendy E. Sera and Cathleen N. Early, MAMMALIAN SPECIES No. 716, pp. 1–10 (2003)
♦ 5DIETS OF NORTHERN PYGMY-OWLS AND NORTHERN SAW-WHET OWLS IN WEST-CENTRAL MONTANA, DENVER W. HOLT AND LESLIE A. LEROUX, Wilson Bull., 108(1), 1996, pp. 123-128
♦ 6FOOD HABITS OF A HARLAN'S HAWK AND LONG-EARED OWLS IN KANSAS, Ted T. Cable and John S. Bond, Kansas Ornithological BULLETIN, Vol. 42, No. 2, June, 1991, p. 25-27
♦ 7Sorex cinereus, John O. Whitaker, Jr., MAMMALIAN SPECIES No. 743, pp. 1–9 (2004)