Pretty interesting actually. I had a swarm descend on my garden, and they decided to move into my compost bin. Honey bees, from a hive or feral colony somewhere elase in the village. With two small kids, and a pretty small garden they couldn't really stay, so I rang a local beekeeper. He came and took them all away. All happy, I get rid of the bees, the beekeeper gets a new load of bees and the bees get a lovely new warm hive. Beekeeper reckoned there were about 5000 in the swarm. Took them all away in a cardboard box. I was pretty please to see them. Shows all is clean and healthy round here.
Hopefully the bees are making a comeback. Haven't seen any around here for the last two years, but this year I notice several in the garden.
Maybe we could have a survey, by everyone reporting bee sightings.