Diet Overlap

Myodes rutilus (northern red-backed vole)
Lagopus muta (Rock Ptarmigan)

Common Diet

Empetrum nigrum (black crowberry)

Common Habitat

Alaska Peninsula montane taiga
Alaska-St. Elias Range tundra
Altai alpine meadow and tundra
Altai montane forest and forest steppe
Arctic coastal tundra
Arctic foothills tundra
Baikalskiy Biosphere Reserve
Barguzinskiy Biosphere Reserve
Bering tundra
Beringia lowland tundra
Beringia upland tundra
Brooks-British Range tundra
Cherskii-Kolyma mountain tundra
Chukchi Peninsula tundra
Cook Inlet taiga
Copper Plateau taiga
Da Hinggan-Dzhagdy Mountains conifer forests
Denali Biosphere Reserve
East Siberian taiga
Gates of the Arctic National Park
Glacier Bay National Park and Preserve
Great Lakes Basin desert steppe
Interior Alaska-Yukon lowland taiga
Interior Yukon-Alaska alpine tundra
Ivvavik National Park
Japan
Junggar Basin semi-desert
Kamchatka Mountain tundra and forest tundra
Kamchatka-Kurile meadows and sparse forests
Kamchatka-Kurile taiga
Katunsky Biosphere Reserve
Kazakh forest steppe
Khangai Mountains conifer forests
Kluane National Park and Reserve
Kola Peninsula tundra
Kronotskiy Biosphere Reserve
Laplandskiy Biosphere Reserve
Low Arctic tundra
Middle Arctic tundra
Muskwa-Slave Lake forests
Nahanni National Park Reserve
Nihonkai montane deciduous forests
Noatak Biosphere Reserve
North America
Northeast Siberian coastal tundra
Northeast Siberian taiga
Northern Canadian Shield taiga
Northern Cordillera forests
Northern Pacific coastal forests
Northwest Russian-Novaya Zemlya tundra
Northwest Territories taiga
Ogilvie-MacKenzie alpine tundra
Okhotsk-Manchurian taiga
Pacific Coastal Mountain icefields and tundra
Pechoro-Ilychskiy Biosphere Reserve
Queen Maud Gulf Bird Sanctuary
Sayan Alpine meadows and tundra
Sayan Intermontane steppe
Sayan montane conifer forests
Sayano-Shushenskiy Biosphere Reserve
Scandinavian and Russian taiga
Scandinavian Montane Birch forest and grasslands
Selenge-Orkhon forest steppe
South Sakhalin-Kurile mixed forests
South Siberian forest steppe
Taimyr-Central Siberian tundra
Taimyrsky Biosphere Reserve
Trans-Baikal Bald Mountain tundra
Trans-Baikal conifer forests
Tuktut Nogait National Park
Ubsunurskaya Kotlovina (Ubsunur Depression)
Ukkusiksalik National Park
Ural montane forests and tundra
Vuntut National Park
Wrangell-St. Elias National Park and Preserve
Yamal-Gydan tundra
Yukon Interior dry forests

Attributes / relations provided by
♦ 1Making The Forest And Tundra Wildlife Connection
♦ 2del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.