Diet Overlap

Bubo virginianus (Great Horned Owl)
Glaucidium gnoma (Northern Pygmy-Owl)

Common Diet

Microtus montanus (montane vole)
Microtus pennsylvanicus (meadow vole)
Peromyscus maniculatus (deer mouse)
Sorex vagrans (Vagrant Shrew)

Common Habitat

Anza-Borrego Desert State Park, CA
Arizona Mountains forests
Bajío dry forests
Bandelier National Monument
Banff National Park
Big Bend Biosphere Reserve
Blue Mountains forests
Boggs Lake Preserve
British Columbia mainland coastal forests
Bryce Canyon National Park
California Central Valley grasslands
California coastal sage and chaparral
California Floristic Province
California interior chaparral and woodlands
California montane chaparral and woodlands
Canyonlands National Park
Cascade Head Biosphere Reserve
Cascade Mountains leeward forests
Cedar Breaks National Monument
Central and Southern Cascades forests
Central Pacific coastal forests
Chihuahuan desert
Chiricahua National Monument
Colorado National Monument
Colorado Plateau shrublands
Colorado Rockies forests
Coronado National Monument
Crater Lake National Park
Curecanti National Recreation Area
Death Valley National Park
Eastern Cascades forests
El Malpais National Monument
El Morro National Monument
Fraser Plateau and Basin complex
Glacier National Park
Grand Canyon National Park
Great Basin montane forests
Great Basin National Park
Great Basin shrub steppe
Guadalupe Mountains National Park
H.J. Andrews Biosphere Reserve
Hovenweep National Monument
Jasper National Park
Klamath-Siskiyou forests
Kootenay National Park
Lake Chelan National Recreation Area
Landels-Hill Big Creek Preserve
Lanphere-Christensen Dunes Preserve
Lassen Volcanic National Park
Lava Beds National Monument
Madrean Pine-Oak Woodlands
Mesoamerica
Mojave and Colorado Deserts Biosphere Reserve
Mojave desert
Mount Rainier National Park
Mount Revelstoke National Park
Mount Tamalpais State Park
Natural Bridges National Monument
Navajo National Monument
Nez Perce National Historical Park
North America
North Central Rockies forests
Northern California coastal forests
Northern Pacific coastal forests
Okanagan dry forests
Olympic Biosphere Reserve
Oregon Caves National Monument
Pacific Rim National Park Reserve
Palouse grasslands
Pinnacles National Monument
Point Reyes National Seashore
Puget lowland forests
Queen Charlotte Islands
Redwood National Park
Reserva de la Biosfera El Cielo
Reserva de la Biosfera El Vizcaino
Reserva de la Biosfera Sierra Gorda
Reserva de la Michilia
Rocky Mountain Biosphere Reserve
Saguaro National Park
Salinas Pueblo Missions National Monument
Samuel P. Taylor State Park
San Joaquin Biosphere Reserve
Sequoia and Kings Canyon Biosphere Reserve
Sevilleta LTER Site
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
Snake-Columbia shrub steppe
South Central Rockies forests
Sunset Crater Volcano National Monument
Tamaulipan mezquital
Trans-Mexican Volcanic Belt pine-oak forests
Walnut Canyon National Monument
Wasatch and Uinta montane forests
Waterton Biosphere Reserve
Whiskey-Shasta-Trinity National Recreation Area
Willamette Valley forests
Wupatki National Monument
Wyoming Basin shrub steppe
Yellowstone Biosphere Reserve
Yoho National Park
Yosemite National Park
Zion National Park

Attributes / relations provided by
♦ 1Microtus montanus, Wendy E. Sera and Cathleen N. Early, MAMMALIAN SPECIES No. 716, pp. 1–10 (2003)
♦ 2DIETS 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
♦ 3DIET 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
♦ 4Sorex vagrans, Scott W. Gillihan and Kerry R. Foresman, MAMMALIAN SPECIES No. 744, pp. 1–5 (2004)