Data accessibility

The data required for reproducing our results will be archived in the supplementary materials. The technical details for assembling a bat point count rig, as well as the working protocol, are published elsewhere (K. Darras et al., 2021). The annotated ultrasound recordings are available publicly on BioSounds (K. Darras et al., 2020), and all infrared photographs are available on OSF (K. F. A. Darras, 2020).