A long, long time ago in the era known to some as the 90's, I was channel surfing and caught the end of something that might have been a TV show or a movie, I have no idea which.
It was set in an arid, rocky but also sandy area. There were at least two local factions that didn't get along. One was slightly more 'advanced' and living in a walled city, and the other was a much more... tribal group who disguised themselves as birds, even though there were no birds on the planet/in the area.
Google-fu hasn't been helping me, only directing me to lists of other campy/terribad science fiction movies.