Fig. 3. (A) Outbound runs of ants leaving the nest in Experiment 3. Green (grey) lines, trajectories of ants in reset (control) condition [N=20 (20)]; filled black circle, nest entrance; all runs were cut to the first transgression of a 0.4 m circle around the nest entrance. (B) First intersections of trajectories with a 0.4 m circle around the nest entrance. Open green (grey) circles, first intersections in reset (control) condition, arrows give the mean direction and the directionality with the radius of the large circle meaning a maximum concentration with r=1 and the marker denoting the border of significance with P=0.01; broken line, nest-to-feeder direction. (C) Outbound runs of ants in Experiment 2 cut at 0.4 m. Red (grey) lines, trajectories of ants in reset (control) condition [N=17 (40)].