Diet Overlap

Lagopus leucura (White-tailed Ptarmigan)
Lagopus muta (Rock Ptarmigan)

Common Diet

Empetrum nigrum (black crowberry)

Common Habitat

Alaska Peninsula montane taiga
Alaska-St. Elias Range tundra
Alberta Mountain forests
British Columbia mainland coastal forests
Central British Columbia Mountain forests
Cook Inlet taiga
Copper Plateau taiga
Denali Biosphere Reserve
Fraser Plateau and Basin complex
Glacier Bay National Park and Preserve
Nahanni National Park Reserve
North America
North Central Rockies forests
Northern Pacific coastal forests
Northern transitional alpine forests
Okanagan dry forests
Pacific Coastal Mountain icefields and tundra
Palouse grasslands
Queen Charlotte Islands
Wrangell-St. Elias National Park and Preserve

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