Figure S1 from Proximity sensors on common noctule bats reveal evidence that mothers guide juveniles to roosts but not food

Visual representation of foraging bouts and roost switches based on presence signals at bat boxes (base stations) and meeting data. (a) A foraging bout is characterized by an interrupt of the presence signals of an individual bat which are received by a base station at a specific roost (in this case base station 1). Usually, variation of the received signal strength indicator (RSSI) increases when a bat is leaving a roost compared to when it is roosting (notice the pronounced spike upon departure and return). (b) A roost switch among two monitored sites is displayed. The presence signals interrupt at base station 2 while the strong variation in RSSI indicates that the bat is flying. Presence signals are then received by base station 1. (c) A roost switch occurs among an unmonitored to a monitored site. Roosting at the unmonitored site is indicated by stable meetings among three bat individuals (dashed/solid/dotted lines). Meetings interrupt when a bat individual leaves the unmonitored site followed by presence signals being received by the base station at the monitored site.