Experiment 1 Data (9 crickets per 6 minute trial)

Experiment 1 Data (9 crickets per 6 minute trial

Experiment 2 Data (1 cricket per 10 minute trial)

Experiment 2 Data (1 cricket per 10 minute trial

Randomness of escape trajectories of túngara frogs.

<p>(a) Schematic illustrates method of measuring the angle for fleeing frogs relative to the predator model; Short black arrows indicate trajectory of predator approach at 0°; Long arrow indicates prey orientation while angle α indicates the prey’s angle of deviation from the predator approach. Angles α+β and α-β are the resultant angles of flight relative to their initial orientation of the prey to the predator. Escapes to the left and right of the predator were pooled as if the escapes were always to the predator's right. (b) and (c) are pooled data for the bat and snake respectively with the arrow indicating the median resultant angle of flight.</p

Circular distribution of the directions each frog faced immediately prior to onset of trial.

<p>(a) Schematic illustrates the method used to measure the initial frog orientation relative to the predator model’s direction of approach; Short black arrows indicate trajectory of predator approach at 0°; Long arrow indicates prey orientation while angle α indicates the prey’s angle of deviation from the predator approach. Orientation angle distribution of frogs presented with bat (b) and snake (c) models was random for both predators.</p

Escape trajectories of túngara frogs relative to the predator approach.

<p>(a) Schematic illustrates method of measuring the angle for fleeing frogs relative to the predator model; Short black arrows indicate trajectory of predator approach at 0°; Long arrow indicates prey orientation while angle α indicates the prey’s angle of deviation from the predator approach. Angles α+β and α-β are the resultant angles of flight relative to their initial orientation of the prey to the bat (b) and snake (c) models.</p