It's been a busy fall and I didn't get the mouse guards on. Very important out here, lots of mice.
The bees are clustered and haven't flown in probably a few weeks so I do hesitate disturbing them.

It's cold enough that if I pop the hives open, manipulate enough to know there aren't mice, then re-close- bees are going to fly out and not be able to get back in before they cool and fall to the ground.

Any tips?

Also- the propolis between boxes will be cracked leaving little air spaces the bees worked hard to close up. My boxes are old so this is significant in my opinion. As we get some very windy conditions is it worth duct taping (or another tape?) the seams between supers?