When I opened my bedroom window, a bat about the size of a large grapefruit (incl. Wings) flew past. The house has a strip of lawn along this side about 8 feet wide with a forested (madrone, aldar, salal, sword fern, etc.) cliff below. The bat was heading for the front yard which has apple, cherry, pear and plum trees. The bat was also too quick for me to get a photo.