Figure 4. Flight behaviors of birds under control vs. treatment conditions.

Data shown are means (±95% CI) of all control flights (open circle) and of all treatment flights (filled circle). Magnitudes and units of y-axes differ from panel to panel. Asterisks (*) indicate a significant difference between control and treatment flights (p < 0.05). Panels represent the (A) within-flight change in velocity (m/s), (B) average velocity (m/s), (C) minimum distance from the obstacle (m), (D) minimum distance from the speaker (m), (E) distance from obstacle (m) at greatest change in flight trajectory, (F) distance from speaker (m) at greatest change in flight trajectory, and (G) proportion of flight completed at greatest change in flight trajectory.