DOI: 10.5061/dryad.s1r7qr3
title: Data from: A 2.6‐g sound and movement tag for studying the acoustic scene and kinematics of echolocating bats

description: 1. To study sensorimotor behaviour in wild animals, it is necessary to
 synchronously record the sensory inputs available to the animal, and its
 movements. To do this, we have developed a biologging device that can
 record the primary sensory information and the associated movements during
 foraging and navigating in echolocating bats. 2. This 2.6 -gram tag
 records the sonar calls and echoes from an ultrasonic microphone, while
 simultaneously sampling fine-scale movement in three dimensions from
 wideband accelerometers and magnetometers. In this study, we tested the
 tag on an European noctula (Nyctalus noctula) during target approaches and
 on four big brown bats (Eptesicus fuscus) during prey interception in a
 flight room. 3. We show that the tag records both the outgoing calls and
 echoes returning from objects at biologically relevant distances. Inertial
 sensor data enables the detection of behavioural events such as flying,
 turning, and resting. In addition, individual wing-beats can be tracked
 and synchronized to the bat’s sound emissions to study the coordination of
 different motor events. 4. By recording the primary acoustic flow of bats
 concomitant with associated behaviours on a very fine time-scale, this
 type of biologging method will foster a deeper understanding of how
 sensory inputs guide feeding behaviours in the wild.
description: Eptesicus_fuscus_prey_capturing_flight_room_experiment_2Data collected on Eptesicus fuscus in a large flight room at the Johns Hopkins University. The bat were trained to fly across a flight room and catch tethered mealworms. The echolocation signals and the echoes were recorded from an on-board acoustic tag. The tag recorded with a sampling rate of 187.5 kHz.tag_data_eptesicus_fuscus_mealworm_catching_experiment_2.wavNyctalus_noctual_target_appraoch_experiment_tag-recordedData collected on Nyctalus noctula in a large flight room at the University of Southern Denmark. The bat was trained to fly across a flight room and land on a target platform. The echolocation signals were recorded simultaneously by an array behind the target sphere as well as from an on-board acoustic tag. The file here is the tag recorded data sampled at 250 kHz.tag_data_nyctalus_noctula_landing.wavNyctalus_noctula_landing_experiment_Biosonar_parameters_extractedData collected on Nyctalus noctula in a large flight room at the University of Southern Denmark. The bat was trained to fly across a flight room and land on a target platform. The echolocation signals were recorded simultaneously by an array behind the target sphere as well as from an on-board acoustic tag. The folder here includes the extracted echolocation parameters recorded by the array at a sampling rate of 250 kHz.Biosonar_parameters.zipNyctalus_noctula_target_appraoch_experiment_array-recordedData collected on Nyctalus noctula in a large flight room at the University of Southern Denmark. The bat was trained to fly across a flight room and land on a target platform. The echolocation signals were recorded simultaneously by an array behind the target sphere as well as from an on-board acoustic tag. This .zip-folder includes the array recorded flights sampled at 250 kHz.Array_data_nyctalus_noctula_target_appraoch_experiment.zip