Barber JR, Kawahara AY. Hawkmoths produce anti-bat ultrasound. Biology Letters. 2013;9(4):20130161 - 20130161. Available at: http://rsbl.royalsocietypublishing.org/cgi/doi/10.1098/rsbl.2013.0161https://syndication.highwire.org/content/doi/10.1098/rsbl.2013.0161.