It's a nice way to have 3-4 queens in one box - so you can have 3-4 separate colonies (i.e. 2 frames each) in one compact spot. I used one for mating queens.
Michael, do you have a provision for feeding with those? It doesn't look to me like the commercial ones could accomodate a feeder, although I've never used a commercial one. I made my own, and put feeders on top. My assumption was that such a small colony with lots of house bees would greatly benefit from having feed on (due to the lack of very many foragers).
I have a Brushy Mountain medium queen castle, a home built 3x3 "castle", and three "queen tenements" made from 8-frame medium boxes... The "queen tenements" have one 3-frame section and two 2-frame sections.
For feeding I drilled 3/16" holes in the individual section covers and used jar feeders made with 1/8" brass tubing. A second box encloses the jars. Take a look at the thread below.
>Michael, do you have a provision for feeding with those?
If I were building them again, I would design it so I could pour syrup on the bottom to feed. I only feed to get the queens to fly. If they were just short of food I would give them a frame of capped honey. If I want a queen to fly, I use those cheap paper dixie cups and squish it enough to fit betwee the two frames and put a tablespoon or so of syrup in it.
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