Depending on how much emerging brood you put in the nucs. This will be the first work force. Until the queen starts laying the bees don't seem to have a purpose. Their always busy but not much gets done.
If you over feed they'll backfill the broodnest and when the queen gets back she'll have no place to lay.
If you over feed they'll backfill the broodnest and when the queen gets back she'll have no place to lay.