Diet Overlap

Calcarius lapponicus (Lapland Longspur) Corvus corax (Northern Raven)

Common Diet

Empetrum nigrum (black crowberry)

Common Habitat

Acadia National Park Alaska Maritime National Wildlife Refuge Alaska Peninsula montane taiga Alaska-St. Elias Range tundra Aleutian Islands Biosphere Reserve Aleutian Islands tundra Algonquin Provincial Park Altai alpine meadow and tundra Altai montane forest and forest steppe Amur meadow steppe Apostle Islands National Lakeshore Appalachian-Blue Ridge forests Arctic coastal tundra Arctic foothills tundra Arctic National Wildlife Refuge Astrakhanskiy Biosphere Reserve Atlantic mixed forests Aulavik National Park Auyuittuq National Park Badlands National Park Baffin coastal tundra Baltic mixed forests Banff National Park Barguzinskiy Biosphere Reserve Bering tundra Beringia lowland tundra Beringia upland tundra Bideford Bay Biosphere Reserve Blue Mountains forests British Columbia mainland coastal forests Brooks-British Range tundra Bruce Peninsula National Park 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 Carpathian montane forests Carrizo Plain Preserve Cascade Mountains leeward forests Caucasus Celtic broadleaf forests Central and Southern Cascades forests Central European mixed forests Central Pacific coastal forests Central Plains Biosphere Reserve Champlain-Adirondack Biosphere Reserve Channel Islands National Marine Sanctuary Channel Islands National Park Chukchi Peninsula tundra Colorado Plateau shrublands Colorado Rockies forests Copper Plateau taiga Curecanti National Recreation Area Da Hinggan-Dzhagdy Mountains conifer forests Daurian forest steppe Davis Highlands tundra Death Valley National Park Dee Estuary/ Aber Dyfrdwy Deer Flat National Wildlife Refuge Denali Biosphere Reserve East European forest steppe Eastern Cascades forests Eastern forest-boreal transition Eastern Great Lakes lowland forests Elk Island National Park English Lowlands beech forests Farallon National Wildlife Refuge Fathom Five National Marine Park Forillon National Park Fundy National Park Glacier Bay National Park and Preserve Glacier National Park Grand Portage National Monument Grasslands National Park Great Basin shrub steppe Greenwater Provincial Park Gros Morne National Park Guizhou Plateau broadleaf and mixed forests Gulf of St. Lawrence lowland forests High Arctic tundra Interior Alaska-Yukon lowland taiga Interior Yukon-Alaska alpine tundra Isle of Rum National Nature Reserve Ivvavik National Park Jasper National Park Joshua Tree National Park Joutsenaapa - Kaita-aapa Junggar Basin semi-desert Kamchatka Mountain tundra and forest tundra Kamchatka-Kurile meadows and sparse forests Kamchatka-Kurile taiga Kejimkujik Seaside Adjunct Klamath-Siskiyou forests Kluane National Park and Reserve Kola Peninsula tundra Kouchibouguac National Park Krkonose Kronotskiy Biosphere Reserve Laidauredeltat Lake Mead National Recreation Area Lake Superior Provincial Park Lake Torne Area Laplandskiy Biosphere Reserve Lava Beds National Monument Long Point Biosphere Reserve Low Arctic tundra Manchurian mixed forests Mediterranean Basin Middle Arctic tundra Mingan Archipelago National Park Reserve Minsmere to Walberswick Heaths and Marshes Mojave and Colorado Deserts Biosphere Reserve Mojave desert Mongolian-Manchurian grassland Montana Valley and Foothill grasslands Moray Firth Mount Revelstoke National Park Mountains of Central Asia Nahanni National Park Reserve Neusiedler See-Osterreichischer Teil New England-Acadian forests Niagara Escarpment Biosphere Reserve North America North Bull Island North Central Rockies forests North-east Greenland National Park Northeast China Plain deciduous forests Northeastern Spain and Southern France Mediterranean forests Northern California coastal forests Northern short grasslands Northwest Russian-Novaya Zemlya tundra Ogilvie-MacKenzie alpine tundra Okanagan dry forests Okskiy Biosphere Reserve Olympic Biosphere Reserve Ostrov Vrangelya (Wrangel Island) Zapovednik Pacific Coastal Mountain icefields and tundra Pacific Rim National Park Reserve Palouse grasslands Pannonian mixed forests Parco Naturale Adamello Parco Regionale Orobie Bergamasche Pechoro-Ilychskiy Biosphere Reserve Pictured Rocks National Lakeshore Point Reyes National Seashore Polar Bear Provincial Park Pontic steppe Prince Albert National Park Prince Edward Island National Park Puget lowland forests Pukaskwa National Park Queen Maud Gulf Bird Sanctuary Redberry Lake Biosphere Reserve Redwood National Park Reserva de la Biosfera El Vizcaino Riding Mountain Biosphere Reserve Rondeau Provincial Park Saint Croix International Historic Site Saint Lawrence Islands National Park Sayano-Shushenskiy Biosphere Reserve Scandinavian and Russian taiga Scandinavian coastal conifer forests Scandinavian Montane Birch forest and grasslands Shortgrass Steppe LTER Site Sierra Nevada forests Sikhote-Alinskiy Biosphere Reserve Sirmilik National Park Snake-Columbia shrub steppe Sokhondinskiy Biosphere Reserve South Central Rockies forests Southern Hudson Bay taiga St. Kilda National Nature Reserve Suiphun-Khanka meadows and forest meadows Taimyr-Central Siberian tundra Tawas Point State Park Tian Shan montane conifer forests Tian Shan montane steppe and meadows Torngat Mountain tundra Tsentral'no-Chernozemny Biosphere Reserve Tuktut Nogait National Park Ubsunurskaya Kotlovina (Ubsunur Depression) Ukkusiksalik National Park Voyageurs National Park Walker Bay Field Station Wapusk National Park Western Great Lakes forests Western short grasslands Willamette Valley forests Wood Buffalo National Park Wrangel Island arctic desert Wrangell-St. Elias National Park and Preserve Wyoming Basin shrub steppe Yamal-Gydan tundra Yellowstone Biosphere Reserve Yoho National Park