Figure 3.

The development of wind drift in fledgling frigatebirds. The LMM-estimated mean effect of wind speed on instantaneous deflection for fledglings of varying experiences (Exp, the number of trips undertaken) and adults. (a) The estimated effect sizes for birds moving out of sight of land and (b) the estimated effect sizes for birds moving in sight of land. As in figure 1, 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.)