Bees are always getting into the greenhouse and can’t find their way out. I assist with a plastic glass an a piece of cardboard. One strange instance though. I was working in the greenhouse when a shiny black insect wasp shaped with grey stripes on its back flew in. It hovered around my head about 6” away, facing me as if checking me out. It then flew straight out of the partially open roof vent, which is unusual because all flying insects spend ages bashing against the glass trying to get out. This one new exactly where to go. Obviously intelligent. Anyone recognise what it was?