Echolocation calls of three bat species, two of each included to show some intraspecific variation (Mammalia: Chiroptera: Vespertilionidae), from Fukui et al. (2004).
	Part of: Egloff W, Agosti D, Kishor P, Patterson D, Miller J (2017) Copyright and the Use of Images as Biodiversity Data. Research Ideas and Outcomes 3: e12502. https://doi.org/10.3897/rio.3.e12502