Figure 5
From: High frequency social calls indicate food source defense in foraging Common pipistrelle bats
Top view of the flight paths of a foraging resident in single flight (a) and in flight with an intruder (b). Small dots indicate positions where echolocation signals were emitted by the resident (black) or by the intruder (grey). Large dots indicate Type 1 and Type 2 signals. Type 2 calls (red dots) were emitted exclusively by the resident in presence of an intruder, often during chase flights.
