I have googled bees but can't come up with an answer. Today, I was putting the washing out when I suddenly heard a swarm of bees. We have oly just moved to our house and the garden has many tall trees in it. A swarm of bees were...well, swarming around the top of a tree. I was a bit worried they were all going to dive down on ds3 and me for a bit but they just seemed to be flying around - but definitely an entire swarm of bees, not just a few. After about 10 minutes, the began to settle again and now I can only see the odd one or two flying around at the top of the tree.
Questions:
Are they nesting up the tree?
What were they doing? I thought they only swarmed when a queen bee flew off to make a new nest. But these seemed to swarm and then return.
Are we in danger from them? I don't mean serious danger, but is it OK to have a nest of bees in your garden?
Any other information you can give me?