Fig. 1

The proportion (A) and meal size (B) of no feed, single feed, and double feed nights in Leach’s storm-petrels in 2006. Scatter plots are shown, and for feeding frequencies (A) each of 60 chicks are represented by a point for each parental feed category (no, single, double), while for meal size (B) every night of the study period for each chick is represented by a point for each parental feed category (no, single, double). Bar whisker plots show median and variation. Different letters denote differences among feed groups calculated by post hoc comparisons using Tukey HSD tests