Diet Overlap

Lagopus lagopus (Willow Ptarmigan)
Falcipennis canadensis (Spruce Grouse)

Common Diet

Empetrum nigrum (black crowberry)

Common Habitat

Alaska Peninsula montane taiga
Alaska-St. Elias Range tundra
Alberta Mountain forests
Arctic National Wildlife Refuge
Bonanza Creek LTER Site
British Columbia mainland coastal forests
Cascade Mountains leeward forests
Central British Columbia Mountain forests
Central Pacific coastal forests
Cook Inlet taiga
Copper Plateau taiga
Denali Biosphere Reserve
Eastern Canadian forests
Eastern Canadian Shield taiga
Fraser Plateau and Basin complex
Gates of the Arctic National Park
Greenwater Provincial Park
Interior Alaska-Yukon lowland taiga
Interior Yukon-Alaska alpine tundra
Jasper National Park
Kluane National Park and Reserve
Midwestern Canadian Shield forests
Muskwa-Slave Lake forests
Nahanni National Park Reserve
Newfoundland Highland forests
Noatak Biosphere Reserve
North America
North Central Rockies forests
Northern Canadian Shield taiga
Northern Cordillera forests
Northern transitional alpine forests
Northwest Territories taiga
Ogilvie-MacKenzie alpine tundra
Pacific Coastal Mountain icefields and tundra
Prince Albert National Park
Queen Charlotte Islands
South Avalon-Burin oceanic barrens
Southern Hudson Bay taiga
Terra Nova National Park
Wapusk National Park
Wood Buffalo National Park
Wrangell-St. Elias National Park and Preserve
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.