We have had temperatures as high as 50 degrees recently, and it's conceivable that bees might be out flying. Might these guys with their little chain saws aggravate the bees and possibly get stung?
My question is, would this situation warrant keeping the bees inside the hive if possible using a moving screen?
I routinely cut the grass within inches of my hives using all types of equipment. I wear dark colored clothes while doing so and I have never been stung. They bump into me or land on me to drink sweat (they like the salt) but never sting. I've heard tell about colonies aggressive enough to greet you at the back door but have not experienced it myself. Unless my girls were like the latter, I wouldn't worry about the workers.
But, if you are concerned, yes moving screens keep them in
To be effective, moving screens need to be installed at night prior to morning activity or else it traps bees outside of the hive.