Fig. 3

Call intervals under different light and noise treatments for all bats grouped (panels A-C) and for individual bats (panel D). (A) Scatter plots of call intervals for both noise combinations (pooled over bat IDs and light conditions), showing the four clusters of call intervals. Grey lines separate data clusters found by k-means (k = 4) clustering of all approach calls, and grey letters (right y-axis) name clusters. (B) Contour plots of cluster B (bottom left) and cluster C (top right) in call intervals against range. (C) Binomial logistic regression on clusters B and C against range for all bats (solid lines) with 95% confidence intervals (broken lines). Point clouds in top and bottom show raw cluster/range data. Dotted lines indicate the p50 value (range of switching between clusters), and corresponding range on panel B. (D) Binomial logistic regression for individual bats (refer to description of panel C)