I have a duck that has trouble walking and 2 young ducks that seem to have the same problems. Their legs are too close together i think, its like the oppposite of splay leg, they stand on their feet and wobble a lot when they walk. The worst affected duck cannot run without falling over on every step and finds it hard walking any distance. Is there anyway to solve this, maybe a kind of backwards hobble so it keeps their feet apart rather than together? And what has caused this, a deformity with the hips maybe?