Diet Overlap

Lemmus sibiricus (brown lemming)
Lagopus muta (Rock Ptarmigan)

Common Diet

Empetrum nigrum (black crowberry)

Common Habitat

Alaska Peninsula montane taiga
Alaska-St. Elias Range tundra
Arctic coastal tundra
Arctic foothills tundra
Arctic National Wildlife Refuge
Aulavik National Park
Auyuittuq National Park
Baffin coastal tundra
Beringia lowland tundra
Beringia upland tundra
British Columbia mainland coastal forests
Brooks-British Range tundra
Central British Columbia Mountain forests
Cherskii-Kolyma mountain tundra
Chukchi Peninsula tundra
Cook Inlet taiga
Davis Highlands tundra
Denali Biosphere Reserve
Europe & Northern Asia (excluding China)
Fraser Plateau and Basin complex
High Arctic tundra
Interior Alaska-Yukon lowland taiga
Interior Yukon-Alaska alpine tundra
Ivvavik National Park
Kluane National Park and Reserve
Kronotskiy Biosphere Reserve
Low Arctic tundra
Middle Arctic tundra
Muskwa-Slave Lake forests
North America
Northeast Siberian coastal tundra
Northeast Siberian taiga
Northern Canadian Shield taiga
Northern Cordillera forests
Northern transitional alpine forests
Northwest Russian-Novaya Zemlya tundra
Northwest Territories taiga
Ogilvie-MacKenzie alpine tundra
Pacific Coastal Mountain icefields and tundra
Queen Maud Gulf Bird Sanctuary
Scandinavian and Russian taiga
Sirmilik National Park
Southern Hudson Bay taiga
Taimyr-Central Siberian tundra
Taimyrsky Biosphere Reserve
Tuktut Nogait National Park
Ukkusiksalik National Park
Vuntut National Park
Walker Bay Field Station
Wapusk National Park
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.