Barrie, I'd sooner not talk about 'next door's cat(s)'...
Here's something I got by accident, a composite of 6 images. It's a drone fly taking off. The dark bits would be its head at the end of each shot. I could merge them but I was more interested in the capture of the wings. It reminds me of some layered shots I've seen of birds in flight.
Click.... Blank....