By cluster, how big do you mean? Fist size, Softball, soccer ball size? It may be a small swarm or after swarm if they're honey bees.Chances are they might be gone by the time you read this. You could try to find a local beekeeper to help you out. If the evening was cool a bee won't move too quiclky that early in the morning.

They're fist-sized (first saw them 6 hrs ago). It's in the mid-eighties now and they've moved up to the side of the blossom. Usually the bees collect pollen from the roses along the driveway but they're just cuddling (a few buzz me everytime I pass by or drive away. If they stay I'll call the beekeepers assoc. to see if they can be moved out back.