Many years ago, before the advent of auto focus/auto exposure
cameras, I made just such a system, using a model aircraft transmitter
and two servo motors on a home made rotating platform to pan the
camera, and a CCTV system that ran on 12 volts, that powered the
camera through an ordinary coax cable. I could use the B&W monitor in
the car.

The TV camera was fixed and aimed through the 35mm. camera's
viewfinder, so that I could see what the camera was seeing, and you
could also see the mirror flipping up, plus sound.

It was great fun following birds such as oystercatchers walking past.
For some reason they didn't seem to mind the camera panning.

I set up it all up at low tide and waited for the rising waters to
push the waders/shorebirds up to their favourite roosting place.

One had to be careful that its wasn't a very high tide!

Given time and a suitable location, I would love to try it again now,
what with auto everything digital cameras and wireless CCTV systems.

Richard.