Diet Overlap

Chen canagica (Emperor Goose)
Haematopus bachmani (Black Oystercatcher)

Common Diet

Mytilus edulis (Blue mussel)

Common Habitat

Alaska Maritime National Wildlife Refuge
Alaska Peninsula montane taiga
Aleutian Islands Biosphere Reserve
Aleutian Islands tundra
California Coast Ranges Biosphere Reserve
Elkhorn Slough Preserve
Gwaii Haanas National Park Reserve
Mount Arrowsmith
North America
Point Reyes National Seashore
Redwood National Park

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.
2Food 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