Attributes / relations provided by
♦ ¹Groundfish Food Habits and Predation on Commercially Important Prey Species in the Eastern Bering Sea From 1997 Through 2001, Lang, G. M., P. A. Livingston, and K. A. Dodd, 2005, U.S. Dep. Comer., NOAA Tech. Memo. NMFS-AFSC-158, 230 p.
♦ ²Breeding ecology of Horned Puffins (Fratercula corniculata) in Alaska: annual variation and effects of El Niño, A.M.A. Harding, J.F. Piatt, and K.C. Hamer, Can. J. Zool. 81: 1004–1013 (2003)