Attributes / relations provided by
♦ ¹Marbled Murrelet Food Habits and Prey Ecology, Esther E. Burkett, USDA Forest Service Gen. Tech. Rep. PSW-152. 1995., Chap 22, p. 223-246
♦ 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