Next morning is nice and sunny and the bees are flying well from both hives. As I walk around to the front of the South hive it looks like the bees are about to move out – the front of the box being covered by the biggest beard I have ever seen!
A bit of a panic, deep breath and we quietly add an additional box back to the hive.
Analysis over tea and biscuits convinces us you really do need an inspection window per box so you can see the comb building and know when to add boxes. The fact our bees bearded so late in the year I expect was due to the shock of having their space below the brood whisked away from them by two whole boxes. If we had built the hive up more accurately this would not have happened. We will try reducing the hive height again come late October when we rotate the hive from warm to cold setting, i.e. comb at right angle to the entrance to reduce cold winter drafts.