Diet Overlap

Bonasa umbellus (Ruffed Grouse) Corvus corax (Northern Raven)

Common Diet

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

Common Habitat

Acadia National Park Alberta Mountain forests Alberta-British Columbia foothills forests Algonquin Provincial Park Apostle Islands National Lakeshore Appalachian-Blue Ridge forests Banff National Park Blue Mountains forests Bonanza Creek LTER Site British Columbia mainland coastal forests Bruce Peninsula National Park California Coast Ranges Biosphere Reserve California Floristic Province Cape Breton Highlands National Park Cascade Head Biosphere Reserve Cascade Mountains leeward forests Catoctin Mountain Park Cedar Creek LTER Site Central and Southern Cascades forests Central British Columbia Mountain forests Central Canadian Shield forests Central Pacific coastal forests Champlain-Adirondack Biosphere Reserve Colorado Plateau shrublands Copper Plateau taiga Coram Biosphere Reserve Coweeta Hydrologic Laboratory LTER Site Crater Lake National Park Craters of the Moon National Monument Denali Biosphere Reserve Eastern Canadian Shield taiga Eastern Cascades forests Eastern forest-boreal transition Eastern Great Lakes lowland forests Elk Island National Park Fathom Five National Marine Park Forillon National Park Fraser Plateau and Basin complex Friendship Hill National Historic Site Fundy National Park Gates of the Arctic National Park Georgian Bay Islands National Park Gettysburg National Military Park Glacier National Park Grand Portage National Monument Grand Teton National Park Grandfather Mountain Great Basin National Park Great Basin shrub steppe Great Smoky Mountains National Park Greenwater Provincial Park Gros Morne National Park Gulf of St. Lawrence lowland forests H.J. Andrews Biosphere Reserve Harvard Forest LTER Site Hubbard Brook Biosphere Reserve Interior Alaska-Yukon lowland taiga Jasper National Park Kejimkujik National Park Kejimkujik Seaside Adjunct Klamath-Siskiyou forests Kluane National Park and Reserve Kootenay National Park Kouchibouguac National Park La Mauricie National Park Lake Chelan National Recreation Area Lake Roosevelt National Recreation Area Lake Superior Provincial Park Lassen Volcanic National Park Lava Beds National Monument Long Point Biosphere Reserve Mid-Continental Canadian forests Midwestern Canadian Shield forests Mingan Archipelago National Park Reserve Montana Valley and Foothill grasslands Mount Mitchell State Park Mount Rainier National Park Mount Revelstoke National Park Muskwa-Slave Lake forests Nahanni National Park Reserve New England-Acadian forests New Jersey Pinelands Biosphere Reserve Newfoundland Highland forests Niagara Escarpment Biosphere Reserve Noatak Biosphere Reserve North America North Central Rockies forests Northern California coastal forests Northern Canadian Shield taiga Northern Cordillera forests Northern short grasslands Northern transitional alpine forests Northwest Territories taiga Olympic Biosphere Reserve Oregon Caves National Monument Pacific Coastal Mountain icefields and tundra Pacific Rim National Park Reserve Pictured Rocks National Lakeshore Prince Albert National Park Prince Edward Island National Park Puget lowland forests Pukaskwa National Park Queen Charlotte Islands Redberry Lake Biosphere Reserve Redwood National Park Reserve de la Biosphere de Charlevoix Riding Mountain Biosphere Reserve Rondeau Provincial Park Saint Croix International Historic Site Saint Lawrence Islands National Park Saint-Gaudens National Historic Site Saratoga National Historical Park Sevilleta LTER Site Shenandoah National Park Snake-Columbia shrub steppe South Avalon-Burin oceanic barrens South Central Rockies forests Southern Appalachian Biosphere Reserve Southern Hudson Bay taiga Southwest Nova Biosphere Reserve Tawas Point State Park Terra Nova National Park Voyageurs National Park Wasatch and Uinta montane forests Waterton Biosphere Reserve Western Great Lakes forests Willamette Valley forests Wood Buffalo National Park Woodland Caribou Provincial Wilderness Park Wrangell-St. Elias National Park and Preserve Wyoming Basin shrub steppe Yellowstone Biosphere Reserve Yoho National Park Yukon Interior dry forests