I am always looking for the opportunity to use Pro capture. It is my favourite feature of this camera. I manually prefocused in front of the post the bird was sitting on and used 60 fps. So long as the bird flies in the right direction it is easy. One frame is bound to be sharp.
Little owl, Athene noctua, single bird in flight, Hungary, July 2018. Olympus Em1 MK2. 300mm f4. 1/4000th at f5.6. 3200 iso. Pro capture at 60 fps manually focused in front of the post.