Not much is known about this species and more research is required to obtain an understanding of its ecology. Based on the ecology of closely related species,
P. bannermani is thought likely to feed on
fish,
squid and
cephalopods, by surface-seizing, underwater pursuit, including diving and plunging, and pattering (del Hoyo et al. 1992, Brooke 2004). It is likely to nest in rock crevices or burrows and form colonies (del Hoyo et al. 1992). ==References==