Heterospecific alarm call recognition in a non-vocal reptile
The ability to recognize and respond to the alarm calls of heterospecifics has previously been described only in species with vocal communication. Here we provide evidence that a non-vocal reptile, the Galápagos marine iguana (Amblyrhynchus cristatus), can eavesdrop on the alarm call of the Galápagos mockingbird (Nesomimus parvulus) and respond with antipredator behaviour. Eavesdropping on complex heterospecific communications demonstrates a remarkable degree of auditory discrimination in a non-vocal species. © 2007 The Royal Society.
Vitousek, M., Adelman, J., Gregory, N., & St Clair, J. (2007). Heterospecific alarm call recognition in a non-vocal reptile. Biology Letters, 3 (6), 632-634. https://doi.org/10.1098/rsbl.2007.0443