Orangutan ruse misleads predators
Wild orangutans in Borneo hold leaves to their mouths to make their voices sound deeper than they actually are, a new study shows. The apes employ the leaf trick when they are threatened by predators, according to scientists observing them. By holding leaves to their mouths, the orangutans lower the frequency of the sounds they produce. This is used to ward off predators, giving them the impression the apes are a bigger target…. (continues @ BBC News)
