Spot on Ernie. For anyone that has missed his talk (and that includes me) you can see James Nieh describing the studies in person here:
http://www.ucsd.tv/sciencematters/lesson2-bees-teach.shtml
The videos aren't working for me at the moment, but try them again at a quieter time and you'll see the man explain all.
all the best
Gavin
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