Fig. 3. Flight behaviour along the hedge. (A) 3-D surface of the hedge; (B) as in A, but with all flight paths; (C–F) flight corridor in four cross sections through the hedge and flight paths at the Y-positions indicated; (G) individual instantaneous distance to the hedge; (H) individual flight speed during the flight along the hedge. Flight direction from right to left, i.e. with decreasing Y.