Bee researchers customarily set up glass observation hives for this purpose. There is no reason to suppose that bees perform differently in the dark than they do when observed in full light.  

Many decades of evidence to support use of glass observation hives use for this purpose. To suggest at this late date that videos of bees filmed in the dark with infrared light are more valid than those filmed in full spectrum light, is simply not supported by facts. 

PLB

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