Diet Overlap

Bonasa umbellus (Ruffed Grouse) Lagopus lagopus (Willow Ptarmigan)

Common Diet

Empetrum nigrum (black crowberry) Vaccinium uliginosum (bog blueberry) Vaccinium vitis-idaea (lingonberry)

Common Habitat

Alberta Mountain forests Bonanza Creek LTER Site British Columbia mainland coastal forests Cascade Mountains leeward forests Central British Columbia Mountain forests Central Pacific coastal forests Copper Plateau taiga Denali Biosphere Reserve Eastern Canadian Shield taiga Fraser Plateau and Basin complex Gates of the Arctic National Park Greenwater Provincial Park Gros Morne National Park Interior Alaska-Yukon lowland taiga 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 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 Wood Buffalo National Park Wrangell-St. Elias National Park and Preserve Yukon Interior dry forests