Figure 7.
Proportions of calls emitted as Sonar Sound Groups (SSGs)
Bats emitted the majority of their calls in SSGs (as opposed to single calls) in all flight conditions, although the relative proportion varies. SSG of 1 (blue) = single call; 2 (pink) = doublet; 3 (yellow) = triplet; 4 (green) = quadruplet. Solid outlined bars show data from successful flights. The dashed outlined bars (Bat 3 and Bat 4, Left Turn) show failed flights. SSG/single call proportions in Turn flights are significantly different from SSG/single call proportions in Straight flights for all bats (McNemar chi-square tests, p < 0.001).