Diet Overlap

Calcarius lapponicus (Lapland Longspur) Rangifer tarandus (caribou)

Common Diet

Arctagrostis latifolia (wideleaf polargrass) Betula intermedia (dwarf birch) Carex bonanzensis (Yukon sedge)

Common Habitat

Alaska Peninsula montane taiga Alaska-St. Elias Range tundra Aleutian Islands Biosphere Reserve Altai montane forest and forest steppe Arctic coastal tundra Arctic foothills tundra Arctic National Wildlife Refuge Aulavik National Park Auyuittuq National Park Baffin coastal tundra Banff National Park Barguzinskiy Biosphere Reserve Bering tundra Beringia lowland tundra Beringia upland tundra Brooks-British Range tundra Canadian Aspen forests and parklands Cascade Mountains leeward forests Chukchi Peninsula tundra Da Hinggan-Dzhagdy Mountains conifer forests Davis Highlands tundra Denali Biosphere Reserve Glacier National Park Gros Morne National Park Gulf of St. Lawrence lowland forests High Arctic tundra Interior Alaska-Yukon lowland taiga Interior Yukon-Alaska alpine tundra Ivvavik National Park Jasper National Park Kamchatka Mountain tundra and forest tundra Kamchatka-Kurile meadows and sparse forests Kamchatka-Kurile taiga Kluane National Park and Reserve Kronotskiy Biosphere Reserve Lake Superior Provincial Park Lake Torne Area Laplandskiy Biosphere Reserve Low Arctic tundra Middle Arctic tundra Mount Revelstoke National Park Nahanni National Park Reserve North America North Central Rockies forests Northeast Siberian coastal tundra Northwest Russian-Novaya Zemlya tundra Ogilvie-MacKenzie alpine tundra Okanagan dry forests Ostrov Vrangelya (Wrangel Island) Zapovednik Palouse grasslands Pechoro-Ilychskiy Biosphere Reserve Polar Bear Provincial Park Prince Albert National Park Pukaskwa National Park Queen Maud Gulf Bird Sanctuary Sayano-Shushenskiy Biosphere Reserve Scandinavian and Russian taiga Sirmilik National Park Southern Hudson Bay taiga Taimyr-Central Siberian tundra Taimyrsky Biosphere Reserve Torngat Mountain tundra Tuktut Nogait National Park Ubsunurskaya Kotlovina (Ubsunur Depression) Ukkusiksalik National Park Walker Bay Field Station Wapusk National Park Wood Buffalo National Park Wrangell-St. Elias National Park and Preserve Yamal-Gydan tundra Yoho National Park