How to Shoot a Hover Fly in Flight
The main thing with in flight hover fly photos is not to try, by that I mean if you go out to take one you will end up normally chasing a hoverfly all over the place with little chance of success. I only take them when an opportunity arises.
In this case the males of this species of hoverfly patrol the flowering bush looking for females . When they spot one they go into a stationary hover for about 10seconds whilst they decide if the female is what they think it is and if it's a suitable mate.