Perhaps a bit OT for an engineering forum, but an interesting observation - I wonder whether anyone else has spotted similar?
While having a smoke break at work, I often watch various small critters going about their natural business outside. The wasps are particularly fascinating - they fly along the wooden fence, usually either looking for good places to chew up some wood to make pulp for nest-building, or hunting prey. The blackberries growing above the fence are just beginning to ripen, so soon they'll be munching those. The hunters fly along, diving down on any little marks they spot to check them for yumminess.
They often catch small spiders, and sometimes a battle ensues with one a bit larger and more able to defend itself.
Just now I saw one steal a trapped fly from a cobweb. It had a bit of a struggle to pull it free from the web, then landed with it nearby to clean off the wrapping of web in which it was trussed. It then flew off with it.
A nice little distraction from staring at a PC screen!