Diet Overlap

Larus delawarensis (Ring-billed Gull) Cyanocitta cristata (Blue Jay)

Common Diet

Gryllus pennsylvanicus (fall field cricket) Melanoplus differentialis (Differential Grasshopper)

Common Habitat

Acadia National Park Algonquin Provincial Park Allegheny Highlands forests Apostle Islands National Lakeshore Appalachian mixed mesophytic forests Arkansas Post National Memorial Assateague Island National Seashore Atlantic coastal pine barrens Audubon National Wildlife Refuge Badlands National Park Banff National Park Big Bend Biosphere Reserve Big Cypress National Preserve Big Thicket Biosphere Reserve Bighorn Canyon National Recreation Area Biscayne National Park Blackbeard Island National Wildlife Refuge Blackwater National Wildlife Refuge Bombay Hook National Wildlife Refuge Bruce Peninsula National Park Buffalo National River California Coast Ranges Biosphere Reserve Calvin College Ecosystem Preserve Canadian Aspen forests and parklands Canaveral National Seashore Cape Breton Highlands National Park Cape Cod National Seashore Cape Hatteras National Seashore Cape Lookout National Seashore Cape Romain National Wildlife Refuge Carlsbad Caverns National Park Carolinian-South Atlantic Biosphere Reserve Catoctin Mountain Park Cedar Creek LTER Site Central forest-grasslands transition Central Gulf Coastal Plain Biosphere Reserve Central Plains Biosphere Reserve Central U.S. hardwood forests Champlain-Adirondack Biosphere Reserve Chattahoochee River National Recreation Area Chesapeake & Ohio Canal National Hist. Park Chickasaw National Recreation Area Chippewa Nature Center Colonial National Historic Park Congaree Swamp National Park Crosswinds Marsh Cumberland Island National Seashore Cuyahoga Valley National Park De Soto National Wildlife Refuge Death Valley National Park Eastern Canadian forests Eastern forest-boreal transition Eastern Great Lakes lowland forests Edwin S. George Reserve Effigy Mounds National Monument Elk Island National Park Everglades Fathom Five National Marine Park Felsenthal National Wildlife Refuge Fire Island National Seashore Florida Keys National Marine Sanctuary Florida sand pine scrub Forillon National Park Fort Caroline National Memorial Fort Matanzas National Monument Fort Pulaski National Monument Fundy National Park Gateway National Recreation Area George Washington Birthplace National Monument George Washington Memorial Parkway Georgian Bay Islands National Park Gettysburg National Military Park Glen Canyon National Recreation Area Great Smoky Mountains National Park Great Swamp National Wildlife Refuge Greenwater Provincial Park Gros Morne National Park Guadalupe Mountains National Park Gulf of St. Lawrence lowland forests Hope College Biology Nature Preserve Horicon National Wildlife Refuge Horseshoe Bend National Military Park Hot Springs National Park Indiana Dunes National Lakeshore Jasper National Park Jean Lafitte National Hist. Park & Preserve Kellogg Biological Station LTER Site Knife River Indian Villages National Hist. Site Konza Prairie Biosphere Reserve Kootenay National Park Kouchibouguac National Park La Mauricie National Park Lacassine National Wildlife Refuge Lake Meredith National Recreation Area Lake Superior Provincial Park Land Between the Lakes Biosphere Reserve Little River National Wildlife Refuge Little St. Simons Island Long Point Biosphere Reserve Mammoth Cave Area Biosphere Reserve (Natn'l Park) Manassas National Battlefield Park Mid-Continental Canadian forests Middle Atlantic coastal forests Midwestern Canadian Shield forests Mingan Archipelago National Park Reserve Mississippi lowland forests Mojave and Colorado Deserts Biosphere Reserve Morristown National Historical Park National Capital Parks - Central National Capital Region - East New England-Acadian forests New River Gorge National River Niagara Escarpment Biosphere Reserve North America Northeastern coastal forests Northern mixed grasslands Northern short grasslands Northern tall grasslands Oak Ridge National Environmental Research Park Ocmulgee National Monument Ozark Mountain forests Pictured Rocks National Lakeshore Piney Woods forests Point Pelee National Park Prince Albert National Park Prince Edward Island National Park Pukaskwa National Park Redberry Lake Biosphere Reserve Redwood National Park Riding Mountain Biosphere Reserve Rock Creek Park Rocky Mountain Biosphere Reserve Rondeau Provincial Park Roosevelt Vanderbilt National Historic Site Saint Croix International Historic Site Saint Lawrence Islands National Park Salt Plains National Wildlife Refuge Saratoga National Historical Park Sevilleta LTER Site Shortgrass Steppe LTER Site Sleeping Bear Dunes National Lakeshore South Atlantic Coastal Plain Biosphere Reserve South Avalon-Burin oceanic barrens South Florida rocklands Southeastern conifer forests Southeastern mixed forests Southern Appalachian Biosphere Reserve Southern Great Lakes forests Tawas Point State Park Tennessee River Gorge Terra Nova National Park Thomas Stone National Historic Site Upper Midwest forest-savanna transition Upper Miss. River Nat'l Wildlife Refuge Valley Forge National Historical Park Vicksburg National Military Park Virginia Coast Biosphere Reserve Voyageurs National Park Waterton Biosphere Reserve Western Great Lakes forests Western Gulf Coastal grasslands Western Michigan University’s Asylum Lake Western short grasslands Wheeler National Wildlife Refuge Wind Cave National Park Yellowstone Biosphere Reserve