Thanks Lori. I don't like to kill things, but prefer not to be stung. In a tree across the field is an Asian hornet nest. Apparently they don't return to the nest in spring - but they lurk nearby and build another, I wonder where? Never had a bat in the house; mice despite having 4 cats at the time, lizards, a loir in the loft, deer , rabbits, wild boar outside. It's interesting living in the country.