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Fig. 4. Flight trajectory and body attitudes during obstacle avoidance manoeuvres
(corresponding to the time course in Fig.
5A). Body attitude for every wingbeat of the captured sequence is
indicated by the body-fixed frame, of which red, green and blue vectors
represent the x-, y- and z-axis in
Fig. 2B, respectively. The
corresponding orthogonal projections are shown in black, with dots indicating
the origins of local frames and lines the body axes (collinear with
y-axis). The hawkmoth approached the target, performed an avoidance
manoeuvre, and then accelerated away by backward flight. The grey arrow
indicates the start of this recording.