I fully expected some bee swarms yesterday as it was hot and muggy, the bees always swarm on these days. Got the call from the Nephew that there was one out and I went down to collect it and it was on a pole, a broom handle stuck in the ground and it looked like a giant brown lollipop. Easy to take as all I had to do was lift the pole out of the ground and carry it to a waiting hive.
A couple of weeks ago I had a Nucleus that lost its Queen, so this swarm was going into a box on top of that hive. I placed a wire mesh screen with a side slot and then put a Brood box on it and 4 combs of foundation and put the bees down on it. Within a few minutes they had gone down into the frames and I was able to place a crown board on top and shovel what bees remained outside into the ventilation hole and put a mesh cover over it. Job done, 10 minutes from start to finish.
The principle here is to establish Queen right colony above the bees without a Queen, they gain Queen pheromone through the mesh and soon integrate with the new swarm, in a few days I can remove the mesh screen and re-arrange the combs in the box and I have an operating hive.
It is possible it can go horribly wrong and the 2 lots of bees fight to the death but as yet I have never had this.
Clive