Re: Honey bees in tree trunk
I'd wait till spring, too, in your neck of the woods. You definitely need reduce the weight of that limb...start sectioning off from the top to take weight off of the area around the hive so that piece can settle to a natural position (don't want it rolling on to your feed with a few thousand unhappy bees buzzing around). Once you get it down to manageable size I'd start maybe three foot above that upper entrance taking slices off, use your own judgment in regards to sawpower and manpower on the thickness of your cuts. Once you hit some comb naturally stop...you won't have damaged the colony very much. Go ahead and level off the base of the limb, too...it looks like you can take a good bit of that off and still leave a bottom entrance for them...they don't need a big opening. Once you get it down to a (hopefully) manageable size stand it up (strong friends help here) on some cement pavers or something that will give it a fairly flat and firm foundation...if nothing else, the ground will do. You may want to nail on some 2x4's to it and brace them against the ground if you think there's a chance it may tilt back over. And finally, get a scrap piece of plywood or tin and nail it to the top. Let it overwinter, come back in the spring and see what you have.
Warning: Rookie beek...take my postings with that grain of salt you keep in your pocket.