Attributes / relations provided by
♦ ¹THE DIET OF MARKHAM’S STORM PETREL OCEANODROMA MARKHAMI ON THE CENTRAL COAST OF PERU, IGNACIO GARCÍA-GODOS, ELISA GOYA & JAIME JAHNCKE, Marine Ornithology 30: 77–83 (2002)
♦ ²Distribution and foraging behaviour of the Peruvian Booby (Sula variegata) off northern Chile, Katrin Ludynia, Stefan Garthe, Guillermo Luna-Jorquera, Journal of Ornithology (2010) 151:103–111