Summary data of FM echolocation pulses recorded by bats during drinking bouts (each individual bout is indicated by a letter), separated into low and high frequency groups and approach (IPI > 20 ms) versus drinking buzz (IPI ≤ 20 ms) stages.

n = number of pulses; IPI = interpulse intervals (ms; mean ± standard deviation); Dur = pulse duration (ms); EF = pulse ending frequency (kHz); Pulse to splash = time interval (ms) from last buzz pulse to water contact; Splash to pulse = time interval (ms) from water contact to next echolocation pulse.