I believe all birds do this, at least ones that roost at night. When the chicken is on a branch and high winds come up, her body goes all over, but her head is steady. I don't know if mine would keep the head straight if I turned them on their side, that is a small chicken.
My kids thought it was funny when they would have the chickens perching on their arms and no matter how they moved their arm the head would remain steady. I think it's just to balance them in trees.
If you have ever tried to knock an unwilling chicken out of a tree you'll know it takes a bit of maneuvering. Or a broom handle.
Tami
