We have looked at the events that lead up to queen rearing and how this can cause a swarm. If a beekeeper nearby, or even you, did not get this stuff right, there will be a swarm floating around.
When bees leave a hive as a swarm, they will pour out of the hive and the queen will fly out too. They will mill around for a while, and then they move to a spot
They will regroup here. At this stage, bees do not normally scout for a new hive. If there is a very strong honey flow they will. But normally they will fly away around midday the next day
When they have flown far enough, they will suddenly slow down, and just zoom onto a tree branch, or into a shrub. They will hang here for the night and the next day scouting begins.
If you place a nucleus box at a height of at least 20 foot off the ground on a tall tree near a strong honey flow where there are bees in the area you will not be disappointed.