I found that very fascinating. SOMEONE FIND ME THE EXPLANATION!

We need mudpuppie to conduct a test to confirm this.

OMG that was hilarious.

Chickens are freaky. /obvious

We do that too, to a degree. It all in the way our skulls are attached to our spine. Before that adaptation our heads would move with our bodies when we ran and walked - so the theory goes. Kinda makes running after prey difficult if you couldn't keep a fixed focus on them.

I would assume that chickens came into the adaptation for the same reason. I would even speculate that it is a vestigial trait from when chickens where carnivorous dinosaurs or, even more likely, could fly.

I, of course, have no on-line links to the theory, just vague memory of something I read or was told in school.

Best video since the Puppycam -- obviously made by an engineer -- love the guy's expression when the Wrath of Chicken descends on him at the end.
My theory is that chickens have evolved to move like this because their survival depends on being on the lookout for (i) predators and (ii) the next piece of corn (or in Mudpuppie's home, the next piece of spaghetti). So they need to keep their heads above the "traffic" so to speak.

love the guy's expression when the Wrath of Chicken descends on him at the end.

Heh! I loved that too...

Awesomeness.