Attributes / relations provided by
♦ ¹Diet of Pygmy Sperm Whales (Kogia breviceps) in the Hawaiian Archipelago, Kristi West, William Walker, Robin Baird, Whitney White, Gregg Levine, Eric Brown, David Schofield, MARINE MAMMAL SCIENCE, 25(4): 931–943 (October 2009)
♦ ²del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
♦ ³Black-footed Albatross (Phoebastria nigripes), Agreement on the Conservation of Albatrosses and Petrels – www.acap.aq