Sophie and I were walking with a couple friends and their dog after lunch. Suddenly the mailman who's down at the other end of the block starts yelling at us. "Stop! Stop!"
I'm thinking, "Geez, I guess he really doesn't like dogs," until he yells, "There's a bee swarm right there!"
The bees came from a hive in a nearby hollow tree:
The woman who lives right there said they swarm every year as the hive reaches capacity and sends out a new queen.
Swarming bees aren't a danger if you don't mess with them and move slowly. They're more interested in their queen and in what the hive scouts have to say.
Isn't that cool?
P.S. You can see more swarms here.