Attributes / relations provided by
♦ ¹Population status, foods and foraging of Laysan albatrosses Phoebastria immutabilis nesting on Guadalupe Island, Mexico, Robert L. Pitman, William A. Walker, William T. Everett, Juan Pablo Gallo–Reynoso, Marine Ornithology 32: 159–165 (2004)
♦ ²Black-footed Albatross (Phoebastria nigripes), Agreement on the Conservation of Albatrosses and Petrels – www.acap.aq
♦ ³del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.