Attributes / relations provided by
♦ ¹Species- and sex-specific differences in foraging behaviour and foraging zones in blue-footed and brown boobies in the Gulf of California, Henri Weimerskirch, Scott A. Shaffer, Yann Tremblay, Daniel P. Costa, Hélène Gadenne, Akiko Kato, Yan Ropert-Coudert, Katsufumi Sato, David Aurioles, Mar Ecol Prog Ser 391: 267–278, 2009
♦ ²DIET OF THE AUSTRALASIAN GANNET MORUS SERRATOR (G.R. GRAY) AROUND NEW ZEALAND, D.A. ROBERTSON, New Zealand Journal of Ecology (1992) 16(2): 77-81