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FOOTNOTES:[15]Present address: U.S. Fish and Wildlife Service, Office of Biological Services, 1011 East Tudor Road, Anchorage, Alaska 99503.[16]Other incidental prey were squid and atherinid fishes, both at the Farallon Islands.[17]Other incidental prey were squid and such fishes as atherinids,Zaniolepis,GenyonemusandPeprilusat the Farallones, and atherinids,TrachurusandHeterostichusat San Diego.[18]Other incidental prey were polychaetes at Netarts and the Farallon Islands.[19]Principal sources: Bent 1925; Cleaver and Franett 1945; Cottam 1939; Cottam and Knappen 1939; Kortright 1942; Mabbot 1920; McGilvrey 1967; Munro and Clemens 1939; Roberts and Huntington 1959.[20]Other incidental items were the fishCololabisandPeprilusat the Farallon Islands.[21]Other incidental items were myctophid fish in northeastern Canada.[22]Other incidental items included the lamprey(Lampetra)at the Farallon Islands.[23]Bent (1946) listed "fish" as prey.[24]Grinnell (1897) listed "fish" as the major dietary component.[25]Bédard (1969a) also listed "fish" as an incidental item.[26]Other incidental prey were copepods and isopods.[27]Other incidental prey were pholids in Denmark.[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 fishMerlucciusat 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.[38]Information on body sizes (length) is from Robbins et al. (1966).[39]Information on bill lengths is from Palmer (1962), Dement'ev et al. (1968), and Friedmann (1950).[40]Feeding methods are from Ashmole (1971) as adapted by Ainley (unpubl. manuscr.).
[15]Present address: U.S. Fish and Wildlife Service, Office of Biological Services, 1011 East Tudor Road, Anchorage, Alaska 99503.
[15]Present address: U.S. Fish and Wildlife Service, Office of Biological Services, 1011 East Tudor Road, Anchorage, Alaska 99503.
[16]Other incidental prey were squid and atherinid fishes, both at the Farallon Islands.
[16]Other incidental prey were squid and atherinid fishes, both at the Farallon Islands.
[17]Other incidental prey were squid and such fishes as atherinids,Zaniolepis,GenyonemusandPeprilusat the Farallones, and atherinids,TrachurusandHeterostichusat San Diego.
[17]Other incidental prey were squid and such fishes as atherinids,Zaniolepis,GenyonemusandPeprilusat the Farallones, and atherinids,TrachurusandHeterostichusat San Diego.
[18]Other incidental prey were polychaetes at Netarts and the Farallon Islands.
[18]Other incidental prey were polychaetes at Netarts and the Farallon Islands.
[19]Principal sources: Bent 1925; Cleaver and Franett 1945; Cottam 1939; Cottam and Knappen 1939; Kortright 1942; Mabbot 1920; McGilvrey 1967; Munro and Clemens 1939; Roberts and Huntington 1959.
[19]Principal sources: Bent 1925; Cleaver and Franett 1945; Cottam 1939; Cottam and Knappen 1939; Kortright 1942; Mabbot 1920; McGilvrey 1967; Munro and Clemens 1939; Roberts and Huntington 1959.
[20]Other incidental items were the fishCololabisandPeprilusat the Farallon Islands.
[20]Other incidental items were the fishCololabisandPeprilusat the Farallon Islands.
[21]Other incidental items were myctophid fish in northeastern Canada.
[21]Other incidental items were myctophid fish in northeastern Canada.
[22]Other incidental items included the lamprey(Lampetra)at the Farallon Islands.
[22]Other incidental items included the lamprey(Lampetra)at the Farallon Islands.
[23]Bent (1946) listed "fish" as prey.
[23]Bent (1946) listed "fish" as prey.
[24]Grinnell (1897) listed "fish" as the major dietary component.
[24]Grinnell (1897) listed "fish" as the major dietary component.
[25]Bédard (1969a) also listed "fish" as an incidental item.
[25]Bédard (1969a) also listed "fish" as an incidental item.
[26]Other incidental prey were copepods and isopods.
[26]Other incidental prey were copepods and isopods.
[27]Other incidental prey were pholids in Denmark.
[27]Other incidental prey were pholids in Denmark.
[28]Other incidental prey were copepods and cephalopods in North Atlantic areas.
[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.
[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.
[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).
[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.
[32]Other incidental prey were isopods in the North Pacific.
[33]Other incidental prey were the fishMerlucciusat the Farallon Islands.
[33]Other incidental prey were the fishMerlucciusat 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.
[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.
[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.
[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.
[37]Proportion based on the arbitrary assumption that half (5) of the 11 species in question catch and eat birds at sea.
[38]Information on body sizes (length) is from Robbins et al. (1966).
[38]Information on body sizes (length) is from Robbins et al. (1966).
[39]Information on bill lengths is from Palmer (1962), Dement'ev et al. (1968), and Friedmann (1950).
[39]Information on bill lengths is from Palmer (1962), Dement'ev et al. (1968), and Friedmann (1950).
[40]Feeding methods are from Ashmole (1971) as adapted by Ainley (unpubl. manuscr.).
[40]Feeding methods are from Ashmole (1971) as adapted by Ainley (unpubl. manuscr.).