Covariates found to significantly predict wind selectivity (y axes), plotted by each trip type (pink: incubation trips; green: self-provisioning trips; orange: chick-provisioning trips). Shaded areas represent 95% confidence intervals. Where significant interactions with leg of the trip (outbound vs. inbound) were detected, slopes are presented for each level (dashed line: outbound flights; dotted line: inbound flights), whereas single solid lines represent effects where no significant interaction with trip leg was detected. Only significant relationships have been plotted (hence no panel for the effect of trip duration during incubation, for example). See alsoTables S1andS2.
