Diet Overlap

Aechmophorus occidentalis (Western Grebe)
Clangula hyemalis (Oldsquaw)

Common Diet

Pandalus goniurus (humpy shrimp)

Common Habitat

Banff National Park
Bighorn Canyon National Recreation Area
Cabrillo National Monument
California Coast Ranges Biosphere Reserve
Cape Hatteras National Seashore
Carolinian-South Atlantic Biosphere Reserve
Clayoquot Sound
Elk Island National Park
Elkhorn Slough Preserve
Farallon National Wildlife Refuge
Glacier Bay National Park and Preserve
Glen Canyon National Recreation Area
Golden Gate National Recreation Area
Gwaii Haanas National Park Reserve
Jasper National Park
Lake Mead National Recreation Area
Mount Arrowsmith
Niagara Escarpment Biosphere Reserve
North America
Olympic Biosphere Reserve
Pacific Rim National Park Reserve
Padre Island National Seashore
Point Reyes National Seashore
Redwood National Park
Rocky Mountain Biosphere Reserve
San Juan Island National Historical Park
Santa Monica Mountains National Recreation Area
Sevilleta LTER Site
Virginia Coast Biosphere Reserve
Voyageurs National Park
Waterton Biosphere Reserve
Yellowstone Biosphere Reserve

Attributes / relations provided by
♦ 1Food Web Relationships of Northern Puget Sound and the Strait of Juan de Fuca : a Synthesis of the Available Knowledge, Charles A. Simenstad, Bruce S. Miller, Carl F. Nyblade, Kathleen Thornburgh, and Lewis J. Bledsoe, EPA-600 7-29-259 September 1979
♦ 2Winter feeding ecology and trophic relationships of Oldsquaws and White-winged Scoters on Kachemak Bay, Alaska, Gerald A. Sanger and Robert D. Jones, Jr., Canadian Wildlife Service, 1984