So cool! You can see how the chicken switches to a more columnar posture because it's Centre of mass is pulled closer to the hip!
Stumbled across this video - really interesting seeing how a chicken walks with a tail that can correctively balance. I bet if you did this with a duck, and strapped half a paper plate to its back, we'd get a decent idea of what Spinosaurus was doing. www.youtube.com/watch?v=DfsP...