Yes today I put a screen up to make do untitled the proper one for hives comes in. As far as I know the nearest hives are 10 miles from me this is why I am assuming these bees are feral as well as aggressive.
My bees are 3 banded Italian these bees are 2 banded and a black butt and a large spot behind the eyes and very aggressive . I put up a screen on the hive and an inside feeder. I closed off any escapes at the top. I can't do anything else but pray.
I had an experience with feral robber bees this weekend. I reduced the entrance, then put Vicks vapor rub above the entrance, then covered with a wet sheet. Decided to leave sheet on all night and to arrow is a rain day.