Found this when I checked on my colony this past Sunday:
In case it’s hard to tell what’s going on, this is a view into the medium second brood box, added a couple of weeks ago. The comb is being built from the bottom of the frames -up! And is wavy. Could’ve even become curly, if I’d left it alone
It was new & just partially filled with nectar, so removing it was simple. After I cleaned up those frames, I decided to put that medium under the first deep box. Wow, that full deep sure was heavy! Thanks for the warning @Michael_Bush. And thanks @Dee for the tip to have an outer cover ready to put the brood box onto, to catch a falling queen - and, @Dawn_SD I remembered your tea towel tip too late, so instead used the inner cover as a sun shield as much as possible while the deep was exposed
When I lifted the deep away from the SBB I saw several bees grappling with a dead carpenter bee, bundling it out the door! Wish I’d stopped to take a picture or video, but I was so enthralled - one bee had a leg & was lifting/flying while four other bees pushed & pulled! So fascinating.
Once the deep was securely on top, I removed some obvious brace comb…and gently tried to free the outermost frames to be able to take them out & get a look into the central area. There was lots of brood in different stages all the way out to the last frame - a hunk of which I dislodged in this process because it was bridging from frame to frame. So I tidied up & closed my hive for the time being.
I don’t see how I can correct this much bridge comb, which they keep rebuilding in spite of my two previous fixes, without major disruption, loss of brood & risk of killing my (second) queen. On the positive side, the colony is bursting with bees, brood & capped honey. Saw no SHB & only one mite on the corflute (had a break in the brood cycle early on with first queen loss) I’m hoping they’ll have a chance to build the medium out before the dearth here in PA - would anyone suggest feeding again during the dearth since it’s a new colony?
Or, should I maybe try splitting this strong but small colony and checkerboarding with foundation? Of course, this would also make a big mess…