I am pretty sure i have a queenless hive...its a swarm i trapped a couple of months ago...was building up nice and now its stopped. They have no honey, no larvae, no brood, no drones and as far as i can tell no queen...but they seem fairly quiet.
Just newpaper merge them with another single box hive, or buy a queen, or put a frame of brood and one of honey and see if they can raise own queen?