Attributes / relations provided by
♦ ¹Dietary composition and the potential of food competition between 0-group cod (Gadus morhua L.) and some other fish species in the littoral zone, Karen Fjøsne and Jakob Gjøsæter, ICES Journal of Marine Science, 53: 757–770. 1996
♦ 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