we used to have bats... I need to keep an eye open and see if they are still flying about. When they tore down a number of older bungalows at the end of the road to make way for a new development I remember there was an issue with bats and the building was delayed until the bat colony had moved elsewhere (apparently into a house across the road?) but thinking about it now, I haven't seen that many since the building works have finished
But they used to fly about the front area of the house more than the back where I usually sit