No exception this time: rigging = problems.
The geometry falls of the joins as well as when bird is moved, neck moves twice the speed of entire body.
I do suspect where those problems are coming from ( perhaps because of the constraints and negative values somewhere, also double parenting) . But frankly, I'm not that well acquainted with rigging and can't seem to fix these problems. The system, though much clearer, is still too confusing to me :/ very sad, but true.
Hopes are these are relevantly easy problems and I wouldn't have to rework body rig, as it is all pretty much finished and would be ready for animating this week...