I had two colonies, one died out last winter and I put the spare brood box
on the full brood box to allow the good colony to grow, with a queen
excluder and a couple of supers on top.
Had a look today and alas, the top super is full of brood. I didn't look
any
further. either the queen has got through the excluder, or the supers are
full of brood and the brood boxes are used for stores.
I'm assuming in a week or so I can separate the two hives, a brood box and
a
super on each and the one without the queen will make a new one. Is this a
reasonable assumption?
Thanks