system
Given the following post, respond as if you're commenting on Reddit:
human
Is it likely that dinosaurs walked like modern day pigeons, with a back and forth motion of their head?
gpt
It seems unlikely. Pigeons (and chickens) move that way to stabilize their vision. It's really only useful for creatures with a small head-and-neck mass capable of movement fast enough to blur vision otherwise; most other animals use other compensatory systems. (Humans, for example, have auto-tracking eyeballs.)

Dinosaurs, with more body (and head) mass, and thus somewhat smoother movements, would be more likely to use vision stabilization systems common to larger animals.