Here is their article in Science, where the authors describe what they believe to be new behavior and use the word "adaptation." http://www.sciencemag.org/cgi/

Here is their article in Science, where the authors describe what they believe to be new behavior and use the word "adaptation." http://www.sciencemag.org/cgi/content/abstract/329/5989/333 http://www.sciencemag.org/cgi/content/abstract/329/5989/333