The best journeys start from home - and for the filmmaker that’s Kirtlington, Oxfordshire.

He meets two villagers with much in common. Both are called Chris (Mason and Powles), both have spent time in Africa - and both are certifiable swift nuts.

There’s much to learn. What is a swift anyway? What’s so special about this bird? And what’s the big problem?

It’s hard to say which of the two swifters is the most unhinged. Time may tell. But there’s a film grant! Time to start prepping, buffing up and filming.

Chris Mason shares some key swift facts: