Diet Overlap

Strix nebulosa (Great Grey Owl)
Aegolius acadicus (Northern Saw-whet Owl)

Common Diet

Sorex cinereus (masked shrew)
Sorex vagrans (Vagrant Shrew)

Common Habitat

Alaska-St. Elias Range tundra
Alberta Mountain forests
Alberta-British Columbia foothills forests
Banff National Park
Blue Mountains forests
British Columbia mainland coastal forests
Bruce Peninsula National Park
California Coast Ranges Biosphere Reserve
California Floristic Province
Canadian Aspen forests and parklands
Cascade Mountains leeward forests
Cedar Creek LTER Site
Central and Southern Cascades forests
Central British Columbia Mountain forests
Central Canadian Shield forests
Central Pacific coastal forests
Crater Lake National Park
Eastern Cascades forests
Elk Island National Park
Fathom Five National Marine Park
Fraser Plateau and Basin complex
Fundy National Park
Jasper National Park
Klamath-Siskiyou forests
Kootenay National Park
Lake Superior Provincial Park
Lassen Volcanic National Park
Lava Beds National Monument
Long Point Biosphere Reserve
Midwestern Canadian Shield forests
Montana Valley and Foothill grasslands
Niagara Escarpment Biosphere Reserve
North America
North Central Rockies forests
Northern mixed grasslands
Northern Pacific coastal forests
Northern short grasslands
Northern tall grasslands
Northern transitional alpine forests
Okanagan dry forests
Olympic Biosphere Reserve
Pacific Coastal Mountain icefields and tundra
Palouse grasslands
Prince Albert National Park
Puget lowland forests
Pukaskwa National Park
Queen Charlotte Islands
Redwood National Park
Riding Mountain Biosphere Reserve
Saint Croix International Historic Site
Saint Lawrence Islands National Park
Sequoia and Kings Canyon Biosphere Reserve
Snake-Columbia shrub steppe
Southern Hudson Bay taiga
Voyageurs National Park
Waterton Biosphere Reserve
Willamette Valley forests
Yellowstone Biosphere Reserve
Yosemite National Park

Attributes / relations provided by
♦ 1Exploring the Denali Food Web, ParkWise, National Park Service
♦ 2DIET OF NORTHERN SAW-WHET OWLS IN SOUTHERN WISCONSIN, SCOTT R. SWENGEL AND ANN B. SWENGEL, The Condor 94:707-711 (1992)
♦ 3Sorex vagrans, Scott W. Gillihan and Kerry R. Foresman, MAMMALIAN SPECIES No. 744, pp. 1–5 (2004)