It wasn't up in the air. Instead, more or less straight ahead, close to the back door and sitting on a pine branch was a large Black Woodpecker [Dryocopus Martius]. They are large, the size of a crow, and have a beak that can drill machine gun style into dead pine wood to look for ants and other insects. She - it was a female, as she had a much smaller red cap - produced the very plaintive cry again. It was definitely penetrating!
Meanwhile our bats have arrived for their summer with us. The small pipestrelles have reclaimed their regular summer roost behind to south-side shutters and the horseshoe [greater we think] we first found last summer in the barn is back as well.