Ann Dougherty question bees reaction to light. I have screen boards instead of inner covers on all my hives. This allows me to provide ample ventilation here in HOT south Florida. I leave the hive tops tipped up on one end for air flow. I use the same technique with my nucs, however I close them a night and open them in the morning. I have not observed any adverse reaction by the bees when I open the covers. They just keep doing their thing. I have had some testy bees that would bang into the screening in an attempt to get at me, but that is an unusual case. I generally work my hives in sandels and shorts. Some times I wear a Tee shirt. Carl Mueller Email: [log in to unmask] West Palm Beach, Florida USA