Figure 7
From: High frequency social calls indicate food source defense in foraging Common pipistrelle bats
Spatial positions of intruders in relation to the position and flight direction of the resident at the emission of Type 1 and Type 2 calls. Spatial positions of intruders (small circles) at Type 1 call (left) and Type 2 call emission (right) by the resident with median position (large circles) indicated by distance and angle relative to the resident’s position and flight direction (0°) (a). Comparison of relative angles (b) and distances (c) at the emission of Type 1 (n = 36) and Type 2 calls (n = 68) revealed significant differences. Bearing angles and inter-individual distances were smaller at Type 2 call emissions than for Type 1 call emissions.
