Research duo discover first instance of non-human primates whispering to each other
Wednesday, September 25, 2013 - 05:30
in Biology & Nature
(Phys.org) —Psychology researchers Rachel Morrison and Diana Reiss of The City University of New York have discovered the first instance of non-human primates whispering to one another. In their paper published in Zoo Biology, the two describe how they recorded vocalizations of captive tamarin monkeys and found that when threatened they sometimes revert to whispering to one another to avoid being overheard.