By NICHOLAS WADE - NEW YORK TIMES
Updated: Tue, 18 May 2010 21:38:38 UTC

Thanks to Catalin for the link.
http://www.nytimes.com/2010/01/12/science/12monkey.html

Walking through the Tai forest of Ivory Coast, Klaus Zuberbühler could hear the calls of the Diana monkeys, but the babble held no meaning for him. 

That was in 1990. Today, after nearly 20 years of studying animal communication, he can translate the forest’s sounds. This call means aDiana monkey has seen a leopard. That one means it has sighted another predator, the crowned eagle. “In our experience time and again, it’s a humbling experience to realize there is so much more information being passed in ways which hadn’t been noticed before,” said Dr. Zuberbühler, a psychologist at the University of St. Andrews in Scotland.

Do apes and monkeys have a secret language that has not yet been decrypted? And if so, will it resolve the mystery of how the human faculty for language evolved? Biologists have approached the issue in two ways, by trying to teach human language to chimpanzees and other species, and by listening to animals in the wild.
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http://www.nytimes.com/2010/01/12/science/12monkey.html

TAGGED: BEHAVIOR, EVOLUTION, PSYCHOLOGY