“…Seabirds are major consumers of marine biomass, feeding on a variety of fish, cephalopods and crustaceans (Ridoux, 1994;Brooke, 2004). The foraging niche of seabirds is influenced by a range of factors, including environmental conditions (Waugh & Weimerskirch, 2003;Amélineau et al, 2016;Jakubas et al, 2017), prey availability (Baird, 1991;Camprasse et al, 2017), morphological characteristics and their influence on flight performance (Phillips et al, 2004;Phillips, Silk & Croxall, 2005;Navarro et al, 2013), and interspecific competition (González-Solís, Croxall & Afanasyev, 2008;Phillips et al, 2008;Kokubun et al, 2016). Competition is thought to promote foraging niche divergence since species occupying the same ecological niche cannot theoretically coexist through time (Schoener, 1974).…”