[28] Other incidental prey were copepods and cephalopods in North Atlantic areas.
[29] Other incidental prey were isopods in western North America and fish eggs near Vancouver Island.
[30] Other incidental prey were fish eggs in Denmark.
[31] Offal from wounded whales and seals, and bits of food, primarily crustaceans and fish, from feeding whales are important scavenger foods (Bent 1922).
[32] Other incidental prey were isopods in the North Pacific.
[33] Other incidental prey were the fish Merluccius at the Farallon Islands.
[34] Other incidental prey were isopods near the Pribilofs and in the Chukchi Sea, and amphipods in the latter area; Bent (1921) considered "crustaceans" to be major prey.
[35] Study conducted during period of breeding failure.
[36] These are the "food categories" of Tables 11-15. Items included in diets are not included here.
[37] Proportion based on the arbitrary assumption that half (5) of the 11 species in question catch and eat birds at sea.