Chris
 
We did some work this fall, reported on it at CA Beekeepers.  Using a  high 
end thermal imaging camera, we shook, opened, and did a variety of things  to 
beehives in cold weather in Montana.  In every case, the camera revealed  that 
when disturbed in cold weather, a colony almost immediately starts  generating 
more heat, and will do so for some time after the disturbance.  
 
So, the colony seems to protect itself from the cold, even when a lid is  
removed and frames pulled out.  Simply banging a hive about caused the same  heat 
increase.
 
So, your bees will probably turn up the thermostat when you move them  in 
cold weather.  That obviously causes them to accelerate consumption of  honey, 
but it seems like they generate heat to buffer themselves against  chill.
 
Jerry
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