I was reading the article in ABJ (no I won't precis it) and noticed that the author purportedly shows the difference in comb building behavior between sections divided by clear plastic and those where there is an opaque divider. The first conclusion would be that bees can somehow 'see' there is more room on the other side. Can bees see in the 'dark'? Infrared from body heat???? Hmmmm. Although I may seem to be making light of this, if someone can replicate this, we may have something to rival or surpass cold fusion for popular appeal. It could replace the bee dance as a topic of discussion at cocktail parties.. We learn from strange observations like this and I'll add my own... My people *insist* that the bees do more and better work in the Ross Rounds frames that have the darkest colour. (We have them ranging from white to chocolate in colour).