The carbon to nitrogen ratio and stable isotope signatures of penguin chick feathers and nine common krill and fish prey species.

Carbon to nitrogen ratios (C/N) and stable isotope values (δ15N & δ13C) are presented mean ± SD. Chick feathers and prey species that do not share at least one superscript within a column for each group (feathers or prey) are significantly different for the variable in question at the 0.05 level. P. bolini[45] and C. gunnari[44] were not included in prey species analyses.