Using this knowledge, I can raise a bird socialized in these ways just by beginning when the bird is young and continuing to provide the same variety of foods and experiences throughout it's life. Consistency in my efforts is the key. The process is generally the same with older, and perhaps fearful, birds although it must proceed more slowly. These types of skills are not especially difficult to teach successfully because they come naturally to psittacines, and reflect something consistent with a wild parrot's experience. On some level, it is satisfying for them to adapt to these expectations of ours.
Wild parrots do eat a variety of foods.
They routinely travel to different roosting and foraging sites. They exercise without thinking about it. Physical movement is second nature to them. They are instinctively programmed to do these things. In socializing a companion bird in these areas, all we have to do is to build on these natural inclinations by consistently providing them with the raw materials and opportunities to expand in these areas.