Do you have a swarm to pick up? Find a local swarm catcher here: http://www.in.gov/dnr/entomolo/5755.htm.
When bees swarm the queen and most of the hive bees leave after filling up on honey. Bees in a swarm are usually very gentle but leave them alone! With all those bees flying one could get stuck in your hair. The swarm sends out scout bees to find a new cavity to nest in. They usually stay for a few days and then they are off to their new home.