Bee on a sunflower

I haven't had time to write the post I wanna post this week, but in the meantime, have a video of a tiny bee collecting pollen on a sunflower:

Based on a discussion on reddit I think it's likely a mason bee (genus Osmia) but am not quite sure. It also seems to look like a polyester bee.

Sunflower courtesy of Alice, who grew it in her garden.