Been experimenting a bit with AF button layout and (memory) settings on the a7IV and having a secondary AF-ON button with a dedicated BIF memory recall settings proved very useful on a recent trip to local bird sanctuary.
I was shooting stationary birds at low shutter speeds, low ISO and single point AF when this seagull swooped in, simply moved the thumb over to the other AF-ON button and the camera switched gears to 1/3200th, aperture wideopen, center weighed auto ISO, continues drive and wide area AF with tracking on the stickiest setting.
Played around with different crops but somehow the image looked best as shot to keep as much of the dark clouds in the frame.