Will the Hives Swarm Again?

We are getting used to the fact that our hives just seem to want to swarm at the moment. The 'old' hive has swarmed twice and the 'new' hive once, and our tally of beehives has increased from one to four in a week. The question is will they swarm again today? I've just listened to the hives and I can hear multiple piping from the old hive and the new hive seems quiet. Could the old hive really swarm for a third time......?