Above you see a photo that I shot in a botanic garden that I found during my hike two days ago. When I was there, I thought I would have seen a lot of bees, but at home I noticed in the photo above that it’s probably rather a hoverfly or a so-called dronefly, not a bee. I think it must be a hoverfly due to the big eyes and the black abdomen. I found an article about the Eristalis hoverfly on Wiki, I think it could be the same. I hope you like the photo.