She became adept at lying sideways in her seed cup and grooming herself while lying on bottom of the cage, so her left leg was always rested and never had the chance to become sore. Ball was a loving and playful baby, but she was a Blue Quaker, and we felt that it would be good for her to have a mate. We placed them together carefully, keeping a watchful eye on the situation. We didn't want Ball to be abused because she was handicapped. We need not have worried.
Ball is too worried about being knocked over to really enjoy a snuggle from Spike.
But they do play together and keep each other company, and that is really the most important thing. Ball has never needed special perches or implements. She has adapted herself to the normal surroundings of any pet bird. She remains sweet and friendly, and lives a life that is as full and joyful as any pet bird's. David asked me.