Regurgitation of the koilin layer in chinstrap penguins (Pygoscelis antarcticus) and its association with gastric parasites

Figures & data

Fig. 1  A koilin layer regurgitated by an adult chinstrap penguin (Pygoscelis antarcticus), 21 January 2014.

Fig. 2  Temporal change in the daily accumulation of regurgitated koilins at six plots in the breeding colony of chinstrap penguins. The size of filled circles represents the number of plots (ranging from one to six).