SNARF; Sounds like you are in a prime spot to set up a couple of swarm traps if so inclined. Swarms have only one thing in mind-find a new home ASAP and start building comb so the queen can start laying and they can start putting up stores. After 2 or 3 days (if they are clustered) they'll start to get testy as they use up their stores.
I jealous, wish I had that problem with a huge mass of bees flying over, usually it is mine that I've missed the swarm indicators or haven't been home.
If your thinking about trapping one or two, search on this site for the how to's.
\"ONLY WHEN THE LAST RIVER HAS BEEN DRIED UP<br />THE LAST TREE BEEN CUT DOWN<br />THE LAST WILD FISH CAUGHT<br />WILL MAN REALIZE YOU CAN\'T EAT MONEY\"<br />GHANDI (?)