How fast is the Sony a9 III? Photographing red kites in flight...

How good is the new Sony a9 III for wildlife photography, in particular, for photographing fast-action subjects like birds in flight? Do features like global shutter, pre-capture and a top frame rate of 120fps translate into better photographs? To find out, I took the camera to Wales and used it to photograph red kites.
Equipment used in this video:
Camera Body
- UK: wibl.co/452S86U
- US: wibl.co/3X9iqTn
Vertical Grip
- UK: wibl.co/4593G8L
- US: wibl.co/3X4avGF
Memory Card
- UK: wibl.co/4dUXTro
- US: wibl.co/3yHMrzh
Lens
- UK: wibl.co/4bVipWY
- US: wibl.co/4bSkmnq
Teleconverter
- UK: wibl.co/3x5wKRV
- US: wibl.co/3WYxfYJ