Figure 2.

The effect of access to landmark cues on wind drift in fledgling and adult frigatebirds. (a) Visual representation of modelled quantities and (b–e) deflection plotted against the cross-beeline wind component in (b) fledgling frigatebirds that could see land, (c) adult frigatebirds that could see land, (d) fledgling frigatebirds that could not see land and (e) adult frigatebirds that could not see land. Regression lines show the mean effect size as estimated using linear mixed-effects models. Negative values for crosswind component/deflection angle indicate that the crosswind/deflection is anti-clockwise with respect to the bird's movement. (Online version in colour.)