Fig. 11. Relationships between flight path curvature, horizontal and turning velocity in freely flying fruit flies. (A) The variance in flight path curvature decreases with increasing horizontal velocity. At maximum forward velocity of approximately 1.0 m s^–1, flight path curvature is apparently constrained to a unique value of approximately 0.016 mm^–1. (B) Relationship between flight path curvature and turning velocity. (C) Data distribution between horizontal and angular velocity. Each data point represents an 8 ms position measurement of each of the tested flies. The vertical line in C indicates maximum horizontal velocity of 0.49 m s^–1 averaged over all flies. Normalized relative frequencies are plotted in pseudo-colour.