As for rigging, it was pretty basic; deformations were provided from the photographs of the 18-camera rig. "There's a great curve in the neck area that's embedded mostly in the cavity of the chest," Hollander explains. "They can actually extend their head away from their body. So the movement came very natural to them and each feather is overlaid with the next."
The mandate was not to exceed the physical limitations of the Gentoos.
In other words, there's no need for squash-and-stretch with this natural ability.
Bill Desowitz is senior editor of AWN & VFXWorld.