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Fig. 3. Flight behaviour along the hedge. (A) 3-D surface of the hedge; (B) as in
A, but with all flight paths; (CF) 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.