I know this is anecdotal, but as I was home in Scotland on the south side of Gairloch I noticed the place was really alive with bumble bees. 20-30 to a willow tree.

In this area there are no bees being kept at this time. I thought how lovely it would be to have a few hives there.

Back in Germany watching the activity of bees around the willow trees, I saw hardly any bumble bees at all.

So I was thinking maybe it would be a shame to introduce bees to an area that can’t really support them as a couple of colonies could well demolish the forage for numerous native 'wild bees'.
I'd be interested in other peoples thoughts on this idea.