Attributes / relations provided by
♦ ¹Feeding ecology and niche segregation in oceanic top predators off eastern Australia, Jock W. Young, Matt J. Lansdell, Robert A. Campbell, Scott P. Cooper, Francis Juanes, Michaela A. Guest, Mar Biol (2010) 157:2347–2368
♦ ²Diet of the Humboldt penguin (Spheniscus humboldti) in northern and southern Chile, C. Herling, B. M. Culik, J. C. Hennicke, Marine Biology (2005) 147: 13–25