Signature whistles of male alliance partners also tend to become more alike over time. (treehugger.com)
Our results clearly show that dolphins provide identity information through signature whistles when they encounter other groups at sea. (rspb.royalsocietypublishing.org)
A new study shows that dolphins use their own unique calls, known as signature whistles, to introduce themselves to others when meeting at sea. (sciencemag.org)