Thanks to everyone for sharing their experiences and info. It sounds like the swarm I got is doing what other folks have observed. This weekend I'm going to have another look-see in the hive and, if nothing is still going on, will add a brood frame from my other established hive to hopefully get things going. My established hive has an Italian queen. The bees in the swarm are much darker in color so I'm guessing they might be Carniolan (which are known to be prone to swarming). Would there be any problem taking a brood frame from my Italian queen hive and putting it in with the other bee type (e.g., Carniolan)? Thanks again.